Journal
ENVIRONMENTAL TECHNOLOGY
Volume 34, Issue 13-14, Pages 1639-1651Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2013.827747
Keywords
acetogenic bacteria; acetogens; carbon dioxide; carbon monoxide; syngas
Categories
Funding
- BMBF
- BMELV program 'Nachwachsende Rohstoffe'
- Evonik Industries AG
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Acetogenic bacteria employing the Wood-Ljungdahl pathway can be used as biocatalysts in syngas fermentation for the production of biofuels such as ethanol or butanol as well as biocommodities such as acetate, lactate, butyrate, 2,3 butanediol, and acetone. The potential of such processes can be projected by the global syngas output, which was 70,817megawatts thermal in 2010 and is expected to increase up to 72% in 2016. To date, different acetogens are used as commercial production strains for industrial syngas fermentations in pilot or demonstration plants (Coskata, INEOS Bio, LanzaTech) and first commercial units are expected to launch operation in the near future (INEOS Bio, LanzaTech). Considerations on potential yields are quite promising for fermentative production. New methods for metabolic engineering were established to construct novel recombinant acetogenic biocatalysts. Synthetic biology will certainly play a major role in constructing strains for commercial operations. This way, a cheap and abundant carbon source most probably replace, processes based on crude oil or sugar in the near future.
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