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Cited by 998

The DOI matches its Crossref record.

Microbial Phenazine Production Enhances Electron Transfer in Biofuel Cells

Rabaey, Korneel, Boon, Nico, Höfte, Monica, Verstraete, Willy·2005·Environmental Science & Technology
DOI 10.1021/es048563o
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Abstract

High-rate electron transfer toward an anode in microbial fuel cells (MFCs) has thus far not been described for bacteria-producing soluble redox mediators. To studythe mechanism of electron transfer, we used a MFC isolate, Pseudomonas aeruginosa strain KRP1. Bacterial electron transfer toward the MFC anode was enabled through pyocyanin and phenazine-1-carboxamide. The presence of the anode stimulated pyocyanin production. Mutant strains, deficient in the synthesis of pyocyanin and phenazine-1-carboxamide, were unable to achieve substantial electron transfer and reached only 5% of the wild type's power output. Upon pyocyanin addition, the power output was restored to 50%. Pyocyanin was not only used by P. aeruginosa to improve electron transfer but as well enhanced electron transfer by other bacterial species. The finding that one bacterium can produce electron shuttles, which can be used also by other bacteria, to enhance electron-transfer rate and growth, has not been shown before. These findings have considerable implications with respect to the power output attainable in MFCs.

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Metadata

Authors
Rabaey, K., Boon, N., Höfte, M., & Verstraete, W.
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2005-03-22
Volume
39
Issue
9
Pages
3401-3408
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/es048563o
OpenAlex
W2050454475
Cited by
998
References
0
FWCI
35.04
Type
journal article
Language
en
Open access
closed

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.