1 technical & progress meeting inescop project progress and planned activities pisa (italy)...
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Technical & Progress Meeting
INESCOP PROJECT PROGRESS
AND PLANNED ACTIVITIES
Pisa (Italy)ICCOM-CNR 22nd June 2012
Mercedes RoigJoaquín FerrerINESCOP
LIFE 10 ENV/IT/364
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First steps taken by INESCOP
ACTION DATE
A2. Study of environmental impact of fatliquoring agents
Jan-May’12
A14. Dissemination material preparation Mar-May’12
A19. International fairs and other events Feb-May’12
A20. Contribution to project website April-May’12
A23. Project management Continuous
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Environmental impact of fatliquoring agents
Objective: To assess the environmental impact of fatliquoring agentsTasks:
– Selection of leather fatliquoring product families– Definition of parameters to be analysed– Preparation of leathers– Laboratory and semi-industrial scale tests– Analysis of fatliquoring products– Characterization of fatliquoring residual baths
Responsible: INESCOP
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1. Selecting the fatliquoring products most commonly used in EU tanneries
Fatliquoring agents
Ref Fatliquoring families Ref Fatliquoring families1 Sulphated olein 6 Sulphated ester 2 Sulphonated olein 7 Phosphoric ester 3 Sulphited olein 8 Sulphochlorinated paraffin 4 Sulphited fish oil 9 Synthetic oil 5 Oxidised lecithin 10 Fatliquoring polymer
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2. Selection of the parameters to be assessedParameters to be assessed
Fat in leatherChromium VIPhysical tests
Fatliquoring products
ArsenicCadmiumLead
Fatliquored leather
Residual baths
pHConductivityCOD - BOD
BiodegradabilityChromium IIIOils & Fats
next
semester
• Test reference• Type of fatliquoring
product and characteristics
• Type of skin and treatment
• Fatliquoring products analysis
• Leather analysis: – physical tests, – chemical tests – organoleptic properties
• Wastewater analysis
Control sheets for tests & results
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3. Leather fatliquoring tests
4. Analysis for the assessment of environmental impact
Semi-industrial Pre-industrialLaboratory
Fatliquoring products - Residual baths - Fatliquored leathers
Impact assessment tests and analyses
next
semester
next
semester
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Characterization of fatliquoring products
Arsenic < 40 ppmArsenic < 40 ppm
Cadmium < 2 ppmCadmium < 2 ppm
Lead < 8 ppmLead < 8 ppm
All fatliquoring products are Arsenic, Cadmium and Lead-free
Wastewater characterization_pH
• The fixation of the fatliquoring agent is made by acidifying at pH <4• In the tests carried out, the pH values were adequate
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1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
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1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
Wastewater characterization_conductivity
• The environmental impact of fatliquoring agents on conductivity is not very significant compared to other products and stages
• Provisionally, sulphochlorinated paraffins are the fats with the greatest impact on this parameter
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Wastewater characterization_COD
1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
• The environmental impact of fatliquoring agents on the COD is quite significant
• Provisionally, sulphated oleins are the fats with the greatest impact on the COD
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Wastewater characterization_BOD
• The environmental impact of the fatliquoring agents on the BOD is quite significant
• So far, sulphited olein, sulphited fish oil and oxidised lecithin are the fats with the greatest impact on the BOD
1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
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Wastewater characterization_biodegradability
1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
• The biodegradability is determined as BOD/COD • The biodegradability of the fatliquoring agents tested is
quite reduced (< 0.3), which shows that they are not biodegradable
Non biodegradab
le
Poorly biodegradab
le
Highly biodegradab
leBiodegradabl
e
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Wastewater characterization_Cr(III)
1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
• For the moment, sulphated olein is the product that releases the least amount of Cr(III) from the leather
• In contrast, sulphited fish oil and oxidised lecithin release a greater amount of Cr (III)
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Wastewater characterisation_Oils&Fats
The results obtained are very different because of the different solubility of the fatliquoring products in the solvent used in the extraction (80:20 Hexane/tert-Butyl Methyl Ether)
1. Sulphated olein 2. Sulphonated olein 3. Sulphited olein 4. Sulphited fish oil 5. Oxidised lecithin 6. Sulphated ester 7. Phosphoric ester 8. Sulphochlorinated
paraffin 9. Synthetic oil 10.Fatliquoring
polymer Laboratory test
Semi-industrial test
Wastewater characterization: provisional results
• There are significant differences in the laboratory and
semi-industrial scale tests results
• Laboratory scale tests:
– Wastewater more concentrated, due to a lesser fixation of
products because of the lower mechanical effect
• Pre-industrial scale tests:
– So far, none of the families assessed stand out for their
lower environmental impact on all the parameters
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Characterisation of the leathers
Organoleptic properties:
Feel: good degree of softeningFeel: good degree of softening
Colour: different shades but acceptableColour: different shades but acceptable
Firmness: adequate firmness of the leatherFirmness: adequate firmness of the leather
There are no significant differences in the appearance of the leathers depending on
the type of fatliquoring agent used
Dissemination material preparation
Dissemination material preparation
Preparation of press releases and a piece of news onINESCOP’s Environment Newsletter
Jan’ 12 & Feb’12
Dissemination
Poster LIFE ECOFATTINGINESCOP
Elda (Alicante)
21st Edition ECOFIRA 2012Valencia (Spain)
29th February – 2nd March 2012
Conference in Green Week Satellite eventsFCVRE - Brussels (Belgium)
22nd May 2012
Dissemination
12th Edition Green WeekBrussels (Belgium)22nd – 25th May 2012
A20. Contribution to project website
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INESCOP´s next steps
ACTION DATE Action 2. Study on the fatliquoring agents environmental impact:
– Test on leather fatliquoring– Test at pre-industrial level
June-Dec’12
Action 4. Environmental demonstration of natural products at lab level
June 12-Mar’13
Action 5. Fatliquoring at a semi-industrial level with natural products.
Sep’12-Jun’ 13
Action 6. Environmental demonstration at pre-industrial level Jan-Dec’13
Dissemination (fairs, press releases, etc.) ContinuousContribution to project website Continuous
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Thanks for your attention