Electricity generation coupled to oxidation of propionate in a microbial fuel cell
- Authors
- Jang, Jae Kyung; Chang, In Seop; Hwang, Hwa Yeon; Choo, Yeng Fung; Lee, JiYoung; Cho, Kyung Suk; Kim, Byung Hong; Nealson, Kenneth H.
- Issue Date
- 1월-2010
- Publisher
- SPRINGER
- Keywords
- Bacterial community; Electricity generation; Microbial fuel cell (MFC); Propionate; 16S rDNA
- Citation
- BIOTECHNOLOGY LETTERS, v.32, no.1, pp.79 - 85
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOTECHNOLOGY LETTERS
- Volume
- 32
- Number
- 1
- Start Page
- 79
- End Page
- 85
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/117199
- DOI
- 10.1007/s10529-009-0118-y
- ISSN
- 0141-5492
- 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 +/- A 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 +/- A 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 gamma, beta, and delta-proteobacteria.
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