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Electricity generation coupled to oxidation of propionate in a microbial fuel cell

Title
Electricity generation coupled to oxidation of propionate in a microbial fuel cell
Authors
Jang J.K.Chang I.S.Hwang H.Y.Choo Y.F.Lee J.Cho K.S.Kim B.H.Nealson K.H.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2009
Journal Title
Biotechnology Letters
ISSN
0141-5492JCR Link
Citation
vol. 32, no. 1, pp. 79 - 85
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Propionate was used as fuel to enrich an electrochemically-active microbial consortium in a microbial fuel cell, and the bacterial consortium was analyzed by culture-independent methods including denaturing gradient gel electrophoresis (DGGE) of the 16S rDNA, and by fluorescent in situ hybridization (FISH). MFCs fed with propionate produced a current of 4.88 ± 0.1 mA stably on 100 mg propionate/l as COD within 3 weeks of the enrichment. When the MFCs were fed with H 2-saturated fuel containing propionate, the current dropped to 3.82 ± 0.07 mA. The maximum current generated was up to 8.8 mA when MFCs were fed with 200 mg propionate/l as COD. The DGGE of 16S rDNA showed that propionate-enriched MFCs have a different bacterial population from that enriched with acetate and from the inoculum used for enrichment. The major member (42%) of the consortium was an unidentified bacterium followed by γ, β, and δ-proteobacteria. © Springer Science+Business Media B.V. 2009.
DOI
10.1007/s10529-009-0118-y
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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