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New Electrode Materials for Microbial Fuel Cells Used to Generate Electricity from Wastewaters

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Abstract:

Microbial fuel cells can be used to treat wastewater, while at the same time generating electricity. Using an MFC as a treatment bioreactor will require that the architecture be scalable to the large size reactor systems that will be needed in practice. Previous tests have shown that tubular cathodes can be used to create high surface area electrodes. Here we demonstrate that a hydrophobic membrane can be coated with a conductive paint on the water-facing side of the membrane. Using this cathode, we generated 16 W/m3 of power, compared to 9.9 W/m3 previously obtained with a flat cathode. Our results demonstrate that this cathode material may be more useful than previously examined materials for power generation using MFCs.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864708790893369

Publication date: 2008-01-01

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