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    Evaluation of multi-brush anode systems in microbial fuel cells

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    Type
    Article
    Authors
    Lanas, Vanessa
    Logan, Bruce E.
    Date
    2013-11
    Permanent link to this record
    http://hdl.handle.net/10754/598251
    
    Metadata
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    Abstract
    The packing density of anodes in microbial fuel cells (MFCs) was examined here using four different graphite fiber brush anode configurations. The impact of anodes on performance was studied in terms of carbon fiber length (brush diameter), the number of brushes connected in parallel, and the wire current collector gage. MFCs with different numbers of brushes (one, three or six) set perpendicular to the cathode all produced similar power densities (1200±40mW/m2) and coulombic efficiencies (60%±5%). Reducing the number of brushes by either disconnecting or removing them reduced power, demonstrating the importance of anode projected area covering the cathode, and therefore the need to match electrode projected areas to maintain high performance. Multi-brush reactors had the same COD removal as single-brush systems (90%). The use of smaller Ti wire gages did not affect power generation, which will enable the use of less metal, reducing material costs. © 2013 Elsevier Ltd.
    Citation
    Lanas V, Logan BE (2013) Evaluation of multi-brush anode systems in microbial fuel cells. Bioresource Technology 148: 379–385. Available: http://dx.doi.org/10.1016/j.biortech.2013.08.154.
    Sponsors
    The research reported here was financially supported by the King Abdullah University of Science and Technology in Saudi Arabia, and by the Strategic Environmental Research and Development Program (SERDP).
    Publisher
    Elsevier BV
    Journal
    Bioresource Technology
    DOI
    10.1016/j.biortech.2013.08.154
    PubMed ID
    24063821
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.biortech.2013.08.154
    Scopus Count
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