PMID- 18767694 OWN - NLM STAT- MEDLINE DCOM- 20090122 LR - 20190715 IS - 0013-936X (Print) IS - 0013-936X (Linking) VI - 42 IP - 16 DP - 2008 Aug 15 TI - Bacterial communities on electron-beam Pt-deposited electrodes in a mediator-less microbial fuel cell. PG - 6243-9 AB - The content of a bacterial consortium found on an electron beam (e-beam) Pt-deposited electrode in a mediator-less microbial fuel cell (MFC) using glucose and glutamate as fuel is reported in this paper. The e-beam Pt-deposited electrode and electrochemically active bacteria (EAB) consortium were developed to improve the mediator-less MFC performance. Denaturing gradient gel electrophoresis (DGGE), restriction fragment length polymorphism (RFLP), and 16S rRNA sequencing were used to identify the EAB consortia. Sequencing results showed that clone ASP-31 was predominant and was similar to Aeromonas hydrophila, an Fe(III)-reducing and EAB. The phylogenetic tree analysis disclosed the presence of gamma-proteobacteria groups such as Aeromonas genus, Enterobacter asburiae, and Klebsiella oxytoca. These results suggest that MFC performance of the e-beam Pt-deposited electrode with Aeromonas genus consortia dominated by A. hydrophila was higher than other MFCs within a short period. With the e-beam Pt-deposited electrode and Aeromonas genus consortia in the mediator-less MFC, it is possible to increase the efficiency of electron transfer between the bacteria and the electrode. FAU - Park, Ho Il AU - Park HI AD - Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA. FAU - Sanchez, David AU - Sanchez D FAU - Cho, Sung Kwon AU - Cho SK FAU - Yun, Minhee AU - Yun M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (DNA, Bacterial) RN - 0 (RNA, Ribosomal, 16S) RN - 49DFR088MY (Platinum) RN - 7440-44-0 (Carbon) SB - IM MH - Bacteria/genetics/*metabolism MH - *Bioelectric Energy Sources MH - Carbon/chemistry MH - DNA, Bacterial/genetics/isolation & purification MH - Electrochemistry MH - *Electrodes MH - *Electrons MH - Electrophoresis, Gel, Two-Dimensional MH - Microscopy, Electron, Scanning MH - Paper MH - Phylogeny MH - Platinum/*chemistry MH - Polymerase Chain Reaction MH - RNA, Ribosomal, 16S/genetics EDAT- 2008/09/05 09:00 MHDA- 2009/01/23 09:00 CRDT- 2008/09/05 09:00 PHST- 2008/09/05 09:00 [pubmed] PHST- 2009/01/23 09:00 [medline] PHST- 2008/09/05 09:00 [entrez] AID - 10.1021/es8006468 [doi] PST - ppublish SO - Environ Sci Technol. 2008 Aug 15;42(16):6243-9. doi: 10.1021/es8006468.