ADVANCED BIOFUEL PRODUCTION WITH ENERGY SYSTEM …...Syngas fermentation -biochemical challenges and...
Transcript of ADVANCED BIOFUEL PRODUCTION WITH ENERGY SYSTEM …...Syngas fermentation -biochemical challenges and...
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ADVANCED BIOFUEL PRODUCTION WITH ENERGY SYSTEM INTEGRATION
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Syngas fermentation -biochemical
challenges and opportunities
Torbjørn Ølshøj Jensen
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Center for Biosustainability
The Novo Nordisk Foundation
Center for Biosustainability
Technical University of Denmark
Kemitorvet bygning 220
2800 Kgs. Lyngby
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Where it all began
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Historical highlights
- 4000 mil Origin of life
1932 Acetogenesis reported in H2 + CO2 ->
acetate
1936 First organisms isolated
1938 First organisms lost
1942 Isolation of an thermophilic acetogen
3 acetate from 1 glucose
1945-52 Acetate from 14CO2 or 13CO2
2004 - Demostration and commercialization
(Lanzatech, Coskata, INEOS Bio)
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H2
ReformeringGasification
BiomassMethan gas
Industrial
gases CO2
MSW
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Wood-Ljungdahl Pathway
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?4 H2 + 2 CO2 acetate + 0.5 ATP
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Butyrate, Lactate Ethanol,
Acetone,
Butanol,
Propanol
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B
B
B
butanol
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Biological gas conversion
CONDEN-SATION
Gas-fermentation
OH
OH
CO2 H2
H2
CO2
OH OH
Butyrate fermentation H2
H2 CO2
O
In situ esterification
O
O
Butylbutyrate
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Biological gas conversion
CONDEN-SATION
Gas-fermentation
OH
OH
CO2 H2
H2
CO2
OH OH
Butyrate fermentation H2
H2 CO2
O
In situ esterification
O
O
Butylbutyrate
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Gas-fermentation
OH
OH
CO2 H2
H2
CO2
OH
OH
Identifying thermophilic acetogen
Characterizing the strain
Optimizing growth (media, conditions etc.)
Establishing genetic tools
Finding genes responsible for production of butanol
Characterizing the proteins (thermostability)
Integrating the pathway into the selected strain
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Cultivation optimization of M thermoacetica resulted increased growth and postponed
sporulation.
4x increase in OD and 3x increase in acetate concentration
Cultivation optimization
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Genetic reporter system
Anaerobe/aerobic marker system was developed. It is working a temperatures from 37-60°C in
a broad range of organisms.
Published in AMB express 2017
Tool development
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CONDEN-SATION
Gas-fermentation
OH
OH
CO2 H2
H2
CO2
OH OH
Butyrate fermentation H2
H2 CO2
O
In situ esterification
O
O
Butylbutyrate
Identifying butyrate producing acetogens
Characterize and benchmark the strains
Optimizing growth and productivity (media, conditions etc.)
on gases
Assess different gas compositions effect on the fermenting
organism
Assess new esterases
Optimize enzymatic esterification
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Assess the influence of inhibitors on the fermenting
organisms
Cell suspension
DetectorLaser
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Esterification
Develop methods for measuring the production
Screen different lipases
Optimize enzymatic esterification
Perform the esterification in the fermentation broth, in situ
Evaluate the detoxifying effect
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Future challenges
Adaption of strains
Expressing the butanol pathway in the themophilic host
Process integration
Scale up
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Acknowledgement
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Thanks for your attention