Title |
Sustained generation of electricity by the spore-forming, Gram-positive, Desulfitobacterium hafniense strain DCB2
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Published in |
Applied Microbiology and Biotechnology, October 2006
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DOI | 10.1007/s00253-006-0564-6 |
Pubmed ID | |
Authors |
C. E. Milliken, H. D. May |
Abstract |
Desulfitobacterium hafniense strain DCB2 generates electricity in microbial fuel cells (MFCs) when humic acids or the humate analog anthraquinone-2,6-disulfonate (AQDS) is added as an electron-carrying mediator. When utilizing formate as fuel, the Gram-positive, spore-forming bacterium generated up to 400 mW/m2 of cathode surface area in a single-chamber MFC with a platinum-containing air-fed cathode. Hydrogen, lactate, pyruvate, and ethanol supported electricity generation, but acetate, propionate, and butyrate did not. Scanning electron microscopy indicated that strain DCB2 colonized the surface of a current-generating anode but not of an unconnected electrode. The electricity was recovered fully within minutes after the exchange of the medium in the anode chamber and within a week after an exposure of a colonized anode to 90 degrees C for 20 min. Of the six strains of Desulfitobacteria tested, all of which would reduce AQDS, only D. hafniense strain DCB2 continued to reduce AQDS and generate electricity for more than 24 h, indicating that reduction of the humate analog alone is insufficient to sustain electrode reduction. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United States | 3 | 3% |
Belgium | 2 | 2% |
Ireland | 1 | <1% |
India | 1 | <1% |
Canada | 1 | <1% |
Thailand | 1 | <1% |
Russia | 1 | <1% |
Unknown | 91 | 90% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 26 | 26% |
Researcher | 17 | 17% |
Student > Master | 11 | 11% |
Student > Bachelor | 7 | 7% |
Student > Doctoral Student | 6 | 6% |
Other | 20 | 20% |
Unknown | 14 | 14% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 34 | 34% |
Engineering | 13 | 13% |
Environmental Science | 11 | 11% |
Biochemistry, Genetics and Molecular Biology | 9 | 9% |
Chemistry | 8 | 8% |
Other | 7 | 7% |
Unknown | 19 | 19% |