| A new approach for in situ cyclic voltammetry of a microbial fuel cell biofilm without using a potentiostat. | |
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MedLine Citation:
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PMID: 19019740 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Electrochemically active bacteria in a microbial fuel cell (MFC) usually exist as a biofilm attached to an electrode surface. Conventional cyclic voltammetry using potentiostat is considered as a powerful and reliable method to study electrochemical behavior of MFC biofilm. In this paper, we introduce a new approach to evaluate redox behavior of an electro-active MFC biofilm without using a potentiostat. Analogous to a conventional cyclic voltammetry study, we controlled the biofilm-electrode potential by computer-feedback controlling the external resistance of an operating MFC. In this way, the MFC can still operate as a "fuel cell" without being "interrupted" by an external device (i.e. potentiostat) that normally does not belong to the system. Relationship between current and biofilm-electrode potential was obtained and showed agreement with a potentiostat-controlled method under similar experimental conditions. The method could be added to our technical repertoire for analysis of bacterial mediator involved in the exocellular electron transfer of a MFC-biofilm, and it could potentially serve as a practical process monitoring method for MFC operation. The application of computer-control components should be further explored to facilitate control, diagnosis as well as optimization of MFC processes. |
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Authors:
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Ka Yu Cheng; Ralf Cord-Ruwisch; Goen Ho |
Publication Detail:
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Type: Journal Article Date: 2008-11-05 |
Journal Detail:
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Title: Bioelectrochemistry (Amsterdam, Netherlands) Volume: 74 ISSN: 1878-562X ISO Abbreviation: Bioelectrochemistry Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-01-26 Completed Date: 2009-03-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100953583 Medline TA: Bioelectrochemistry Country: Netherlands |
Other Details:
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Languages: eng Pagination: 227-31 Citation Subset: IM |
Affiliation:
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Faculty of Sustainability, Environment and Life Sciences, Murdoch University, WA 6150, Australia. k.cheng@murdoch.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Bioelectric Energy Sources* Biofilms* Electrochemistry / instrumentation Electrodes Equipment Design Oxidation-Reduction |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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