KMID : 0545120110210020187
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Journal of Microbiology and Biotechnology 2011 Volume.21 No. 2 p.187 ~ p.191
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Characterization of Microbial Fuel Cells Enriched Using Cr(VI)-Containing Sludge
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Ryu Eun-Yeon
Kim Mi-A Lee Sang-Joon
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Abstract
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Microbial fuel cells (MFCs) were successfully enriched using sludge contaminated with Cr(VI) and their characteristics were investigated. After enrichment, the charge of the final 10 peaks was 0.51 C ¡¾ 1.16%, and the anodic electrode was found to be covered with a biofilm. The enriched MFCs removed 93% of 5 mg/l Cr(VI) and 61% of 25 mg/l Cr(VI). 16S rDNA DGGE profiles from the anodic electrode indicated that ¥â-Proteobacteria, Actinobacteria, and Acinetobacter sp. dominated. This study is the first to report that electrochemically active and Cr(VI)-reducing bacteria could be enriched in the anode compartment of MFCs using Cr(VI)-containing sludge and demonstrates the Cr(VI) removal capability of such MFCs.
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KEYWORD
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Microbial fuel cell, hexavalent chromium, Cr(VI) reduction, microbial diversity, denaturing gradient gel electrophoresis (DGGE), electrochemically active bacteria
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