| Reaction engineering analysis of hydrogenotrophic production of acetic acid by Acetobacterium woodii. | |
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MedLine Citation:
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PMID: 20830677 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Great interest has emerged in biological CO₂-fixing processes in the context of current climate change discussions. One example for such a process is the hydrogenotrophic production of acetic acid by anaerobic microorganisms. Acetogenic microorganisms make use of carbon dioxide in the presence of hydrogen to produce acetic acid and biomass. In order to establish a process for the hydrogenotrophic production of acetic acid, the formation of acetate by Acetobacterium woodii was studied in a batch-operated stirred-tank bioreactor at different hydrogen partial pressures (pH₂) in the gas phase. The volumetric productivity of the batch processes increased with increasing hydrogen partial pressure. A maximum of the volumetric productivity of 7.4 g(acetate) L⁻¹ day⁻¹ was measured at a pH₂ of 1,700 mbar. At this pH(2) a final acetate concentration of 44 g L⁻¹ was measured after a process time of 11 days, if the pH was controlled at pH 7.0 (average cell density of 1.1 g L⁻¹ cell dry weight). The maximum cell specific actetate productivity was 6.9 g(acetate) g(cdw)⁻¹ day⁻¹ under hydrogenotrophic conditions. |
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Authors:
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Martin Demler; Dirk Weuster-Botz |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biotechnology and bioengineering Volume: 108 ISSN: 1097-0290 ISO Abbreviation: Biotechnol. Bioeng. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2010-12-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7502021 Medline TA: Biotechnol Bioeng Country: United States |
Other Details:
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Languages: eng Pagination: 470-4 Citation Subset: IM |
Copyright Information:
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© 2010 Wiley Periodicals, Inc. |
Affiliation:
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Technische Universität München, Garching, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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