Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 36, Issue 1, Pages 876-884Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.08.074
Keywords
Pilot-scale; Multi-anode/cathode; Microbial fuel cell; Granular activated carbon (GAC); Cathode fouling; MnO2 cathodes
Categories
Funding
- EPA SBIR
- NYSERDA
- Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, and Office of Science, U.S. Department of Energy
- Center of Environmental Science and Engineering (CESE)
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A new type of microbial fuel cell (MFC), multi-anode/cathode MFC (termed as MAC MFC) containing 12 anodes/cathodes were developed to harvest electric power treating domestic wastewater. The power density of MAC MFCs increased from 300 to 380 mW/m(2) at the range of the organic loading rates (0.19-0.66 kg/m(3)/day). MAC MFCs achieved 80% of contaminant removal at the hydraulic retention time (HRT) of 20 h but the contaminant removal deceased to 66% at the HRT of 5 h. In addition, metal-doped manganese dioxide (MnO2) cathodes were developed to replace the costly platinum cathodes, and exhibited high power density. Cu-MnO2 cathodes produced 465 mW/m(2) and Cu-MnO2 cathodes produced 500 mW/m(2). Due to the cathode fouling of the precipitation of calcium and sodium, a decrease in the power density (from 400 to 150 mW/m(2)) and an increase in internal resistance (R-in) (from 175 to 225 Omega) were observed in MAC MFCs. Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu.
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