making biochar with specified properties
DESCRIPTION
Making Biochar with Specified Properties. Modeling for Designer Biochar. Draft. Kelly Sveinson Chemistry Department Langara College Vancouver, British Columbia. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/1.jpg)
Making Biochar with Specified Properties
Modeling for Designer Biochar
Kelly SveinsonChemistry DepartmentLangara CollegeVancouver, British Columbia
Draft
![Page 2: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/2.jpg)
Incentive:
“…agronomic utility biochars is not an absolute value, as it needs to meet local soil constraints”
Enders et al/ Bioresource Technology 114 (2012)
![Page 3: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/3.jpg)
Background
Langara College has dedicated facilities for making (1kg) and analyzing biochar
![Page 4: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/4.jpg)
Diacarbon Energy operates the largest commercial biochar reactor in Western Canada (1 tonne/hour)
Background
![Page 5: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/5.jpg)
Langara College and Diacarbon Energy are working to utilize low value agronomic byproducts for quality biochar production: • spent mushroom substrate• poultry litter• anaerobic digestate
Background
![Page 6: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/6.jpg)
Current objective biochar characteristics for Diacarbon supply contract
(biochar as an energy product)
• Maximum low value ag byproduct feedstock• Maximum of 15% ash• Minimum of 20 kJ per gram• Other elemental considerations
![Page 7: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/7.jpg)
fir shav
ings
hemlock
sawdust
const. an
d demo wast
e wood
alder
sawdust
cedar
chips
pulp sludge
dewate
red co
w man
ure
poultry li
tter
spent m
ushroom su
bstrate
0
10
20
30
40
50
60
70
80
90
100
6
8
10
12
14
16
18
20
Biochar Yield and Proximate Analysis(produced at 710 ˚C)
fixed C
volatile C
ash
yield of biochar
perc
ent b
y m
ass d
ry b
asis
perc
ent y
eild
![Page 8: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/8.jpg)
The Goals of this Study
• Be able to produce biochar with specified characteristics by blending feedstocks
• Develop a predictive model that relates biochar properties to feedstock blend proportions and process temperature
• Suggest blend formulations to Diacarbon Energy that satisfies their target biochar properties
![Page 9: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/9.jpg)
Experimental approach
• Produce batches of biochar using various blends of Fir and spent mushroom substrate (SMS) at different temperatures.
• Analyze the biochar for physical and chemical characteristics.
• Model the relationships• Suggest optimal formulations and operating
conditions
![Page 10: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/10.jpg)
Plot relating biochar % ash to amount of spent mushroom substrate relative to Fir in the feed stock.
Treatment temperature 700 C.
![Page 11: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/11.jpg)
Plot relating biochar % ash to amount of spent mushroom substrate relative to Fir in the feed stock.
Treatment temperature 500 C.
![Page 12: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/12.jpg)
Plot relating biochar % ash to treatment temperature, and amount of spent mushroom substrate relative to Fir in the feedstock
![Page 13: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/13.jpg)
Plot relating biochar % ash to treatment temperature, and amount of spent mushroom substrate relative to Fir in the feedstock
![Page 14: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/14.jpg)
Recommendations for Diacarbon:
• Operating the reactor at temperatures near 500 C, a blend of 25% spent mushroom substrate and 75% Fir optimizes the economic return and produces biochar with the desired qualities.
• Similar exploration of local feedstocks will reveal other options allowing for fluid operation as economics and availability varies.
![Page 15: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/15.jpg)
Can the methodology be used to tune biochar properties for other
applications?
Yes!
![Page 16: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/16.jpg)
Plot relating pH to amount of spent mushroom substrate relative to Fir in the feedstock.
Treatment temperature 700 C.
![Page 17: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/17.jpg)
Plot relating yield of fixed C to amount of spent mushroom substrate relative to Fir in the feedstock.
Treatment temperature 700 C.
![Page 18: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/18.jpg)
Surface plot relating biochar % volatiles to treatment temperature, and amount of spent mushroom substrate relative
to Fir in the feed stock
% SMS
Temp. (deg C)700
% Volatiles4.06.08.010.012.014.016.018.020.022.024.026.028.0
6.49+12.710*((y-500)/200)+0.138*x-0.066*x*((y-500)/200)
0 20 40 60 80 100
5000
5
10
15
2025
30
Func
tion
![Page 19: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/19.jpg)
Short term vision
Given local biochar ideal target properties AND locally available
biomass samples, be able to provide feedstock formulations that will
produce the desired biochar while minimizing cost.
![Page 20: Making Biochar with Specified Properties](https://reader036.vdocument.in/reader036/viewer/2022062501/568168db550346895ddfd188/html5/thumbnails/20.jpg)
Contact:
Kelly [email protected]
Thank you
Students and technicians: Marcus Stein, Heidi Streick, Hiromi Seguma, Fraser Johnson