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Record number 411248
Title Performance of a scaled-up Microbial Fuel Cell with iron reduction as the cathode reaction
Author(s) Heijne, A. ter; Liu, F.; Rijnsoever, L.S. van; Saakes, M.; Hamelers, H.V.M.; Buisman, C.J.N.
Source Journal of Power Sources 196 (2011)18. - ISSN 0378-7753 - p. 7572 - 7577.
Department(s) Sub-department of Environmental Technology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) operation - oxidation - systems
Abstract Scale-up studies of Microbial Fuel Cells are required before practical application comes into sight. We studied an MFC with a surface area of 0.5 m2 and a volume of 5 L. Ferric iron (Fe3+) was used as the electron acceptor to improve cathode performance. MFC performance increased in time as a combined result of microbial growth at the bio-anode, increase in iron concentration from 1 g L-1 to 6 g L-1, and increased activity of the iron oxidizers to regenerate ferric iron. Finally, a power density of 2.0 W m-2 (200 W m-3) was obtained. Analysis of internal resistances showed that anode resistance decreased from 109 to 7 mO m2, while cathode resistance decreased from 939 to 85 mO m2. The cathode was the main limiting factor, contributing to 58% of the total internal resistance. Maximum energy efficiency of the MFC was 41%.
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