Journal
ENZYME AND MICROBIAL TECHNOLOGY
Volume 46, Issue 6, Pages 450-455Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2010.02.010
Keywords
MFC; Carbon monoxide; Syngas; Carboxydotrophic microorganisms
Categories
Funding
- National Research Council of Canada (NRC)
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Electricity production from carbon monoxide (CO) is demonstrated in a single chamber microbial fuel cell (MFC) with a CoTMPP-based air cathode. The MFC was inoculated with anaerobic sludge and continuously sparged with CO as a sole carbon source. Volumetric power output was maximized at a CO flow rate of 4.8 L L-R(-1) d(-1) reaching 6.4 mW L-R(-1). Several soluble and gaseous degradation products including hydrogen, methane, and acetate were detected, resulting in a relatively low apparent Coulombic efficiency of 8.7%. Tests also demonstrated electricity production from hydrogen and acetate with the highest and fastest increase in voltage exhibited after acetate injection. It is hypothesized that electricity generation in a CO-fed MFC is accomplished by a consortium of carboxydotrophic and carbon monoxide - tolerant anodophilic microorganisms. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.
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