The microbiology of microbial electrolysis cells

Semenec, Lucie; Franks, Ashley E.

doi:10.1071/ma14065

Cited by 13 publications

(9 citation statements)

References 31 publications

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“…Microbial electrochemical systems enable electrons to be removed and inserted directly into microbial metabolic processes by microbes that are capable of interacting with an electrode, which are commonly called electric bacteria 1 . While first gaining much attention due to their ability to generate electricity, the ability of microbes to externally transfer electrons both directly and indirectly, has seen interest in their use for environmental monitoring, bioremediation applications and industrial processes (see 1,2 ).…”

Section: Microbes and Electronsmentioning

confidence: 99%

Plugging in microbial metabolism for industrial applications

Bell

Franks

2017

Microbiol. Aust.

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The ability of electric microbes to electrically interact with electrodes is opening up a number of possibilities with industrial applications. Microbes are able to utilise the electrode as an electron source to reduce CO2 for the production of organic compounds directly or produce H2 as a reducing equivalent for partner microbes for the production of commodity chemicals. Electrodes can also allow redox unbalanced fermentation processes to occur through the addition or subtraction of reducing equivalents that remove bottle necks in these pathways. Electrodes are also providing a physical refuge for electric microbes to maintain anaerobic fermenter stability. It can be expected that the role for electric microbes will continued to be expanded as part of industrial applications in the future.

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Section: Microbes and Electronsmentioning

confidence: 99%

Plugging in microbial metabolism for industrial applications

Bell

Franks

2017

Microbiol. Aust.

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“…They are essential for the bioelectrochemical processes in MFCs [5]. A typical MFC is a twochambered system containing an anode chamber and a cathode chamber separated by an ion permeable membrane [6,7]. Electricigens in the anode chamber oxidize organic matter to release electrons to the anode electrode.…”

Section: Introductionmentioning

confidence: 99%

Overview on Electricigens for Microbial Fuel Cell

Fan¹,

Xue²

2016

Open Biotechnol. J.

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Microbial fuel cell is a bio-electrochemical system that drives a current by using bacteria and mimicking bacterial interactions found in nature. The electricigens and its activity have important influence on the power generation capacity and organic matter degradation ability of MFC system. The common types of electricigens and their application situation in microbial fuel cell are summarized in this paper, the basic characteristics and electron transfer mechanism of some major microorganisms are described, so as to provide some ideas for electricigens' selection, transformation and optimization of a variety of strains to improve the power generation capacity and organic matter degradation ability of MFC system.

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“…A recent Microbiology Australia issue (The Microbial Ecology of the Environment; November 2014) covered some environmental anaerobic microbiology topics including sulfidic sediments 4 , electromicrobiology (typically comprising an anaerobic anode and an oxic cathode) 5 and chloroethene degradation (dehalorespiration) 6 .…”

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confidence: 99%

Interesting anaerobes in the environment

Blackall¹

2015

Microbiol. Aust.

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Prokaryotes (Bacteria and Archaea) have a wide range of capacities to survive by generating energy in environments and situations lacking oxygen, which abound on Earth.Anaerobic metabolic strategies include anaerobic respiration (numerous types -e.g. nitrate reduction -Paracoccus denitrificans; sulfur respiration -Desulfuromonadales; methanogenesis -Methanosarsina spp.; iron reductionGeobacter spp.; dehalorespiration -Dehalococcoides ethenogenes) and fermentation (sugars converted to simpler organic compounds like acids, gases and alcohols -e.g.Lactobacillus spp.). Relatively novel environmental anaerobic strategies include anaerobic ammonium oxidation (Anammox -e.g. Brocadia spp.) and anaerobic methane oxidation (AMO) 1 , which is a syntrophic association between anaerobic methanotrophic archaea (ANME) and sulfate-, iron-, manganese-or nitrate-reducing bacteria 2 . The classic anaerobic synthrophic example is interspecies hydrogen/ formate transfer between a hydrogen/formate producing fatty acid oxidising bacterium (the syntroph) and a hydrogen/ formate consumer (methanogen or sulfate-reducer) 3 .Microbes vary in their oxygen tolerance and are described as obligate anaerobes if they are killed by atmospheric levels of oxygen due to the lack of catalase and superoxide dismutase that provide oxygen radical protection. This short review provides a brief overview of three environmental anaerobic metabolic topics and demonstrates metabolic and environmental diversity employed by the microbes. Microbiologically influenced corrosion (MIC)Corrosion

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The microbiology of microbial electrolysis cells

Cited by 13 publications

References 31 publications

Plugging in microbial metabolism for industrial applications

Plugging in microbial metabolism for industrial applications

Overview on Electricigens for Microbial Fuel Cell

Interesting anaerobes in the environment

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