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Difference between revisions of "Gas fermentation"
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== Process and technologies== | == Process and technologies== | ||
=== Production organisms === | |||
A gas fermentation process depends on microorganisms that are able to digest gaseous carbon sources. Best known for this ability are acetogenic bacteria using the Wood-Ljungdahl pathway or acetyl-CoA pathway to fix and convert CO/CO<sub>2</sub> and hydrogen to biomass and products. They are able to synthesize useful products such as ethanol, butanol and 2,3-butanediol and they are anaerobes so need to be used in an anaerobic, oxygen-free atmosphere, fermentation setting. For commercial applications, mainly strains from ''Clostridium ljungdahlii'' and ''C. autoethanogenum'' are used. | |||
=== Fermentation technology === | |||
The overall gas fermentation process can be divided into four steps:<ref name=":0">{{Cite journal|title=Gas Fermentation—A Flexible Platform for Commercial Scale Production of Low-Carbon-Fuels and Chemicals from Waste and Renewable Feedstocks|year=2016-05-11|author=FungMin Liew, Michael E. Martin, Ryan C. Tappel, Björn D. Heijstra, Christophe Mihalcea, Michael Köpke|journal=Frontiers in Microbiology|volume=7|doi=10.3389/fmicb.2016.00694}}</ref> | The overall gas fermentation process can be divided into four steps:<ref name=":0">{{Cite journal|title=Gas Fermentation—A Flexible Platform for Commercial Scale Production of Low-Carbon-Fuels and Chemicals from Waste and Renewable Feedstocks|year=2016-05-11|author=FungMin Liew, Michael E. Martin, Ryan C. Tappel, Björn D. Heijstra, Christophe Mihalcea, Michael Köpke|journal=Frontiers in Microbiology|volume=7|doi=10.3389/fmicb.2016.00694}}</ref> | ||
# accumulation or generation of syngas | # accumulation or generation of syngas | ||