Journal
ENVIRONMENTAL TECHNOLOGY
Volume 34, Issue 13-14, Pages 1947-1956Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2013.827223
Keywords
flat microbial fuel cell; bioelectricity; wastewater treatment; decentralized systems
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Funding
- European Commission
- project WW4ENVIRONMENT [LIFE08 ENV/P/00237]
- FCT/MCTES, Portugal [SFRH/BD/38331/2007]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/38331/2007] Funding Source: FCT
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A very compact flat microbial fuel cell (MFC), with 64cm(2) each for the anode surface and the cathode surface and 1cm(3) each for the anode and cathode chambers, was tested for wastewater treatment with simultaneous electricity production with the ultimate goal of implementing an autonomous service in decentralized wastewater treatment systems. The MFC was operated with municipal wastewater in sequencing batch reactor mode with re-circulation. Current densities up to 407W/m(3) and a carbon removal of 83% were obtained. Interruption in the operation slightly decreased power density, while the re-circulation ratio did not influence power generation. The anode biofilm presented high conductivity, activity and diversity. The denaturing gradient gel electrophoresis band-pattern of the DNA showed the presence of several ribotypes with different species of Shewanellaceae and Geobacteraceae families.
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