![Page 1: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/1.jpg)
copy 2016 HORIBA Ltd All rights reserved
Meeting Green Goals with Zeta Potential and
the SZ-100 will start soon
Jeffrey Bodycomb PhD
HORIBA Scientific
wwwhoribacomusparticle
See us (live) at Pittcon
Booth 1039
copy 2016 HORIBA Ltd All rights reserved
Meeting Green Goals with Zeta Potential and
the SZ-100
Jeffrey Bodycomb PhD
HORIBA Scientific
wwwhoribacomusparticle
copy 2016 HORIBA Ltd All rights reserved
Wastewater
Wastewater contains chemical and
particulate contaminants that need to be
removed for safety environmental and
aesthetic reasons
Today we primarily talk about
particulate waste
copy 2016 HORIBA Ltd All rights reserved
How do we look at particle contamination
Suspended particles will appear as
haze and can be measured with
Turbidity meter ndash scattered intensity at
right angle
Total suspended solids (filter and
weigh)
See US EPA Analytical Method
for Turbidity Measurement Method
1801
See the HORIBA U-53 for
measuring turbidity
copy 2016 HORIBA Ltd All rights reserved
Getting Rid of Particles
Put them in a giant tank and wait (settling or flotation)
Filter particles out with filter media sludge
Particle free water
Fig1SB by 19ceic3004 - Own work Licensed under CC BY-SA 30 via Commons - httpscommonswikimediaorgwikiFileFig1SBpngmediaFileFig1SBpng
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 2: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/2.jpg)
copy 2016 HORIBA Ltd All rights reserved
Meeting Green Goals with Zeta Potential and
the SZ-100
Jeffrey Bodycomb PhD
HORIBA Scientific
wwwhoribacomusparticle
copy 2016 HORIBA Ltd All rights reserved
Wastewater
Wastewater contains chemical and
particulate contaminants that need to be
removed for safety environmental and
aesthetic reasons
Today we primarily talk about
particulate waste
copy 2016 HORIBA Ltd All rights reserved
How do we look at particle contamination
Suspended particles will appear as
haze and can be measured with
Turbidity meter ndash scattered intensity at
right angle
Total suspended solids (filter and
weigh)
See US EPA Analytical Method
for Turbidity Measurement Method
1801
See the HORIBA U-53 for
measuring turbidity
copy 2016 HORIBA Ltd All rights reserved
Getting Rid of Particles
Put them in a giant tank and wait (settling or flotation)
Filter particles out with filter media sludge
Particle free water
Fig1SB by 19ceic3004 - Own work Licensed under CC BY-SA 30 via Commons - httpscommonswikimediaorgwikiFileFig1SBpngmediaFileFig1SBpng
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 3: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/3.jpg)
copy 2016 HORIBA Ltd All rights reserved
Wastewater
Wastewater contains chemical and
particulate contaminants that need to be
removed for safety environmental and
aesthetic reasons
Today we primarily talk about
particulate waste
copy 2016 HORIBA Ltd All rights reserved
How do we look at particle contamination
Suspended particles will appear as
haze and can be measured with
Turbidity meter ndash scattered intensity at
right angle
Total suspended solids (filter and
weigh)
See US EPA Analytical Method
for Turbidity Measurement Method
1801
See the HORIBA U-53 for
measuring turbidity
copy 2016 HORIBA Ltd All rights reserved
Getting Rid of Particles
Put them in a giant tank and wait (settling or flotation)
Filter particles out with filter media sludge
Particle free water
Fig1SB by 19ceic3004 - Own work Licensed under CC BY-SA 30 via Commons - httpscommonswikimediaorgwikiFileFig1SBpngmediaFileFig1SBpng
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 4: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/4.jpg)
copy 2016 HORIBA Ltd All rights reserved
How do we look at particle contamination
Suspended particles will appear as
haze and can be measured with
Turbidity meter ndash scattered intensity at
right angle
Total suspended solids (filter and
weigh)
See US EPA Analytical Method
for Turbidity Measurement Method
1801
See the HORIBA U-53 for
measuring turbidity
copy 2016 HORIBA Ltd All rights reserved
Getting Rid of Particles
Put them in a giant tank and wait (settling or flotation)
Filter particles out with filter media sludge
Particle free water
Fig1SB by 19ceic3004 - Own work Licensed under CC BY-SA 30 via Commons - httpscommonswikimediaorgwikiFileFig1SBpngmediaFileFig1SBpng
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 5: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/5.jpg)
copy 2016 HORIBA Ltd All rights reserved
Getting Rid of Particles
Put them in a giant tank and wait (settling or flotation)
Filter particles out with filter media sludge
Particle free water
Fig1SB by 19ceic3004 - Own work Licensed under CC BY-SA 30 via Commons - httpscommonswikimediaorgwikiFileFig1SBpngmediaFileFig1SBpng
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 6: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/6.jpg)
copy 2016 HORIBA Ltd All rights reserved
Settling Process
This is a summary of the desired
process in a settling tank (or pond)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 7: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/7.jpg)
copy 2016 HORIBA Ltd All rights reserved
Stokes Law
This is why we care about flocculation
Particle settling velocity increases by square of
particle size If you double particle size
particles settle four times faster
Gravity increases with r3 Drag only increases
with r So velocity increases with r2
Larger Particles Less expensive process
9
)(2 2grv
fp
v = velocity (down is positive)
p = density of particle
f = density of fluid
g = acceleration due to gravity
r = particle radius
= fluid viscosity
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 8: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/8.jpg)
copy 2016 HORIBA Ltd All rights reserved
Effect of size on settling
Diameter
(micron)
Order of
size
Time to
settle 1
meter (=26
like sand)
Time to
settle 1
meter (=13
like clay)
1000 (1 mm) Coarse
sand
11 sec 61 sec
100 Fine sand 110 sec 610 sec
10 Silt 11000 sec
(32 hr)
61000 sec
(17 hr)
1 Bacteria 11 x106 sec
(13 days)
61 x106 sec
(70 days)
01 colloids 11 x108 sec
(36 years)
61 x108 sec
(19 years)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 9: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/9.jpg)
copy 2016 HORIBA Ltd All rights reserved
Coagulants
Alum - Aluminum Sulfate Al2(SO4)3
Ferric Chloride ndash FeCl3
Acrylamide-acrylate copolymers are anionic
due to the presence of negatively charged
carboxylate groups
polyacrylamide Na-polyacrylate
Anionic
Polyacrylamide by Roland Mattern - Roland1952 Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFilePolyacrylamidesvgmediaFilePolyacrylamidesvg
Sodium polyacrylate skeletal by Edgar181 - Own work Licensed under Public Domain via Commons -
httpscommonswikimediaorgwikiFileSodium_polyacrylate_skeletalpngmediaFileSodium_polyacrylate_skeletalpng
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 10: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/10.jpg)
copy 2016 HORIBA Ltd All rights reserved
Why will particles flocculate
Fine particles will tend to flocculate to
reduce surface energy
Less surface
lower free
energy
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 11: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/11.jpg)
copy 2016 HORIBA Ltd All rights reserved
Why donrsquot particles flocculate
Most particles in aqueous suspension
have a surface charge and therefore
repel each other they never touch
ldquoKinetically Stablerdquo
-
-
- -
- -
-
-
-
-
-
-
-
- -
- -
-
-
-
-
-
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 12: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/12.jpg)
copy 2016 HORIBA Ltd All rights reserved
Jar Test
Fill identical beakers with identical
amounts of waste
Keep one as a control (or blank)
Add varying amounts of coagulant
Evaluate results Do small particle
wastes become cloudy (indicating
formation of larger flocs)
Inexpensive
Operator Dependent can be time
consuming
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 13: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/13.jpg)
copy 2016 HORIBA Ltd All rights reserved
What is Zeta Potential
Zeta potential is the charge on a particle at
the shear plane
-
- - -
- -
-
-
- -
-
-
-
+
+
+
+
+
+ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Shear plane
Bulk liquid
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 14: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/14.jpg)
copy 2016 HORIBA Ltd All rights reserved
How do we suppress charge effects
If we can ldquoturn offrdquo the particle charge then the particles will flocculate and more rapidly settle (or be more easily filtered)
We can do this with coagulants and flocculants Multivalent ions Ca++ Al+++
Polyelectrolytes acrylamideacrylic acid copolymers
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
-
-
- -
- -
-
-
-
-
- Al+++
Al+++ Al+++
Al+++
Al+++
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 15: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/15.jpg)
copy 2016 HORIBA Ltd All rights reserved
Isoelectric point
Isoelectric point
X-axis can also be Ca++ or other ion concentration
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 16: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/16.jpg)
copy 2016 HORIBA Ltd All rights reserved
What is the Isoelectric Point
The Isoelectric Point is the point at
which the zeta potential (surface
charge) is zero
Achieved by the addition of
potential forming ions
Specific adsorption of charge modifying
agents ndashthe coagulents and flocculants
mentioned earlier
This is what we need to control the
system
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 17: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/17.jpg)
copy 2016 HORIBA Ltd All rights reserved
How to Measure Zeta Potential
Acoustic techniques (use sound to probe particle response)
It is much more popular to use light scattering to probe motion of particles due to an applied electric field This technique is known as electrophoretic light scattering
Used for determining electrophoretic mobility zeta potential
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 18: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/18.jpg)
copy 2016 HORIBA Ltd All rights reserved
How to Measure With the SZ-100
Single compact unit that performs size
zeta potential and molecular weight
measurements the SZ-100
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 19: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/19.jpg)
copy 2016 HORIBA Ltd All rights reserved
How to determine zeta potential
Apply an electric field and probe response of particles to applied field
You need to see Doppler shift in scattered light due to particle motion with respect to fixed electrodes
- +
w0
w0+wd
V
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 20: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/20.jpg)
copy 2016 HORIBA Ltd All rights reserved
TiO2 Grades
pH
Mo
bil
ity (
m2V
s)
x 1
08
Surface matters not bulk material
Silica
Alumina
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 21: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/21.jpg)
copy 2016 HORIBA Ltd All rights reserved
Clay
To flocculate this clay so it settles pH must be quite low
You will need a lot of acid
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 22: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/22.jpg)
copy 2016 HORIBA Ltd All rights reserved
Autotitrator Accessory
AcidBase bottles
Precision dosing
Sample beaker
Connect
to
instrument
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 23: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/23.jpg)
copy 2016 HORIBA Ltd All rights reserved
Complete SZ-100 for Zeta Potential
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 24: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/24.jpg)
copy 2016 HORIBA Ltd All rights reserved
Industrial Control of pH
Once you know your target pH how do
you control it in real time
pH controller for industrial use (HP-480
series) transmitter 4-20 mA signal to
valve to control flow of acidbase
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 25: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/25.jpg)
copy 2016 HORIBA Ltd All rights reserved
Other Additives Gypsum
Note log scale
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 26: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/26.jpg)
copy 2016 HORIBA Ltd All rights reserved
Other Additives Alum vs Gypsum
To flocculate clay so it settles choose alum at 001 g alumg
clay Too much or too little and floculation is not ideal
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 27: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/27.jpg)
copy 2016 HORIBA Ltd All rights reserved
What about refinery waste
Oil in Water such as the OCMA-350 (fast)
EPA Method 1664 oil and grease in water
Extract with hexane (slow but required)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 28: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/28.jpg)
copy 2016 HORIBA Ltd All rights reserved
Refinery Wastewater
Water full of oil droplets (and a bit of H2S)
Unknown (proprietary) coagulent
Note the strong
positive charge
if you add too
much coagulent
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 29: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/29.jpg)
copy 2016 HORIBA Ltd All rights reserved
Another water analysis option
The Aqualog
The only true simultaneous absorbance-
fluorescence system available
For CDOM (colored dissolved organic
matter)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 30: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/30.jpg)
copy 2016 HORIBA Ltd All rights reserved
Zeta Potential Conclusions
Determining Zeta potential gives the
chemist a tool for understanding what
different treatment options are doing to
the particles
Understanding is necessary for
optimization
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom
![Page 31: See us (live!) at Pittcon Booth 1039© 2016 HORIBA, Ltd. All rights reserved. Meeting Green Goals with Zeta Potential and the SZ-100 Jeffrey Bodycomb, Ph.D. HORIBA Scientific](https://reader035.vdocument.in/reader035/viewer/2022062610/610ec42a0797eb2d6f507595/html5/thumbnails/31.jpg)
copy 2016 HORIBA Ltd All rights reserved
QampA
Ask a question at labinfohoribacom
Keep reading the monthly HORIBA Particle e-mail newsletter
Visit the Download Center to find the video and slides from this webinar
Jeff Bodycomb PhD
P 800-446-7422
E jeffbodycombhoribacom