| Hydrogen production with a microbial biocathode. | |
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MedLine Citation:
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PMID: 18284174 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper, for the first time, describes the development of a microbial biocathode for hydrogen production that is based on a naturally selected mixed culture of electrochemically active micro-organisms. This is achieved through a three-phase biocathode startup procedure that effectively turned an acetate- and hydrogen-oxidizing bioanode into a hydrogen-producing biocathode by reversing the polarity of the electrode. The microbial biocathode that was obtained in this way had a current density of about -1.2 A/Nm2 at a potential of -0.7 V. This was 3.6 times higher than that of a control electrode (-0.3 A/m2). Furthermore, the microbial biocathode produced about 0.63 m3 H2/m3 cathode liquid volume/day at a cathodic hydrogen efficiency of 49% during hydrogen yield tests, whereas the control electrode produced 0.08 m3 H2/m3 cathode liquid volume/day at a cathodic hydrogen efficiency of 25%. The effluent of the biocathode chamber could be used to inoculate another electrochemical cell that subsequently also developed an identical hydrogen-producing biocathode (-1.1 A/m2 at a potential of -0.7 V). Scanning electron micrographs of both microbial biocathodes showed a well-developed biofilm on the electrode surface. |
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Authors:
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René A Rozendal; Adriaan W Jeremiasse; Hubertus V M Hamelers; Cees J N Buisman |
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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: Environmental science & technology Volume: 42 ISSN: 0013-936X ISO Abbreviation: Environ. Sci. Technol. Publication Date: 2008 Jan |
Date Detail:
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Created Date: 2008-02-20 Completed Date: 2008-03-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: United States |
Other Details:
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Languages: eng Pagination: 629-34 Citation Subset: IM |
Affiliation:
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Sub-Department of Environmental Technology, Wageningen University, Bomenweg 2, P.O. Box 8129, 6700 EV Wageningen, The Netherlands. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Bioelectric Energy Sources* Electrodes Hydrogen / metabolism* |
| Chemical | |
Reg. No./Substance:
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1333-74-0/Hydrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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