A novel electrochemically active and Fe(III)-reducing bacterium phylogenetically related to Aeromonas hydrophila, isolated from a microbial fuel cell.
A facultative anaerobic bacterium was isolated from a mediator-less microbial fuel cell fed with artificial wastewater containing acetate and designated as PA3. The isolate was identified as a strain of Aeromonas hydrophila based on its biochemical, physiological and morphological characteristics as well as 16S rDNA sequence analysis and DNA-DNA hybridization. PA3 used glucose, glycerol, pyruvate and hydrogen to reduce Fe(III), nitrate and sulfate. Cyclic voltammetry showed that PA3 was electrochemically active and was the culture collection strain A. hydrophila KCTC 2358. Electricity was generated from a fuel cell-type reactor, the anode compartment of which was inoculated with cell suspensions of the isolate or A. hydrophila KCTC 2358. The electrochemical activities are novel characteristics of A. hydrophila.
Pham
Cuong Anh
CA
Water Environment and Remediation Research Centre, Korea Institute of Science and Technology, Hawolgok-dong, Sungpook-ku, 136-791, Seoul, South Korea.
Jung
Sung Je
SJ
Phung
Nguyet Thu
NT
Lee
Jiyoung
J
Chang
In Seop
IS
Kim
Byung Hong
BH
Yi
Hana
H
Chun
Jongsik
J
D016980:Aeromonas hydrophila / Q000145:classification* / Q000378:metabolism* / Q000648:ultrastructure; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes / Q000382:microbiology; D004583:Electrons; D005290:Ferric Compounds / Q000378:metabolism*; D008855:Microscopy, Electron, Scanning; D009566:Nitrates / Q000378:metabolism; D010802:Phylogeny; D013431:Sulfates / Q000378:metabolism
D005290:Ferric Compounds; D009566:Nitrates; D013431:Sulfates