Electroactive microorganisms in bioelectrochemical systems
- 7 March 2019
- journal article
- review article
- Published by Springer Science and Business Media LLC in Nature Reviews Microbiology
- Vol. 17 (5), 307-319
- https://doi.org/10.1038/s41579-019-0173-x
Abstract
A vast array of microorganisms from all three domains of life can produce electrical current and transfer electrons to the anodes of different types of bioelectrochemical systems. These exoelectrogens are typically iron-reducing bacteria, such as Geobacter sulfurreducens, that produce high power densities at moderate temperatures. With the right media and growth conditions, many other microorganisms ranging from common yeasts to extremophiles such as hyperthermophilic archaea can also generate high current densities. Electrotrophic microorganisms that grow by using electrons derived from the cathode are less diverse and have no common or prototypical traits, and current densities are usually well below those reported for model exoelectrogens. However, electrotrophic microorganisms can use diverse terminal electron acceptors for cell respiration, including carbon dioxide, enabling a variety of novel cathode-driven reactions. The impressive diversity of electroactive microorganisms and the conditions in which they function provide new opportunities for electrochemical devices, such as microbial fuel cells that generate electricity or microbial electrolysis cells that produce hydrogen or methane.Keywords
This publication has 155 references indexed in Scilit:
- Electrical Conductivity in a Mixed-Species BiofilmApplied and Environmental Microbiology, 2012
- Use of a Coculture To Enable Current Production by Geobacter sulfurreducensApplied and Environmental Microbiology, 2012
- Direct Exchange of Electrons Within Aggregates of an Evolved Syntrophic Coculture of Anaerobic BacteriaScience, 2010
- Electrical transport along bacterial nanowires from Shewanella oneidensis MR-1Proceedings of the National Academy of Sciences of the United States of America, 2010
- Selection of a variant of Geobacter sulfurreducens with enhanced capacity for current production in microbial fuel cellsBiosensors and Bioelectronics, 2009
- Preferential Use of an Anode as an Electron Acceptor by an Acidophilic Bacterium in the Presence of OxygenApplied and Environmental Microbiology, 2008
- Shewanella secretes flavins that mediate extracellular electron transferProceedings of the National Academy of Sciences of the United States of America, 2008
- Secretion of Flavins by Shewanella Species and Their Role in Extracellular Electron TransferApplied and Environmental Microbiology, 2008
- Current Production and Metal Oxide Reduction by Shewanella oneidensis MR-1 Wild Type and MutantsApplied and Environmental Microbiology, 2007
- Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganismsProceedings of the National Academy of Sciences of the United States of America, 2006