FUEL 132 |
| A single chamber stackable microbial fuel cell with consisting of four MFC units was constructed for organic matter biodegradation and electricity production. When the reactor was maintained in batch mode with sodium acetate (600mg/L) as carbon source, all MFC units had similar polarization curve and produced maximum power around 0.87 mW/unit. Cathode charge transfer was found to be the more important limiting factor than anode charge transfer. Parallel connection of all units produced maximum power of 3.12 mW/reactor (7.61 W/m3); however, series connection caused energy losses and could only produce maximum power density of 2.20 mW/reactor (5.36 W/m3). When the reactor was maintained in continues mode (0.7mL/min, 128 mg/L COD in influent), the overall COD removal rate was 73.4%. Under this condition, both voltage output of MFC units and COD decreased along the flow path, indicating heterogeneous distribution of organic matters. |
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Fuel Cell Technology: Biofuel Cells, Enzymatic and Microbial
8:25 AM-11:45 AM, Tuesday, August 21, 2007 Boston Park Plaza -- Arlington Rm, Oral
Division of Fuel Chemistry |