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Graphite Fiber Brush Anodes for Increased Power Production in Air-Cathode Microbial Fuel Cells
Bruce Logan, Shaoan Cheng, Valerie Watson, Garett Estadt
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Abstract
To efficiently generate electricity in microbial fuel cells, the surface area of the anode must be maximized to support biofilm growth while minimizing total reactor volume. Graphite fiber brush electrodes provide high surface areas and porosities. A brush electrode placed in a single-chamber air-cathode MFC produced a maximum power density of 1430 mW/m² (73 W/m³) with ammonia-treated brush anodes and acetate substrate, exceeding previous reports for MFC power densities.
Keywords
MFCair-cathodegraphite brush anodepower densityacetate
Identifiers
- Journal
- Environmental Science & Technology
- Year
- 2007