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Evidence of competi...
Evidence of competition between electrogens shaping electroactive microbial communities in microbial electrolysis cells
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- Abadikhah, Marie, 1992 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rodriguez, Miguel de Celis (författare)
- Universidad Complutense de Madrid,Complutense University
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- Persson, Frank, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wilen, Britt-Marie, 1966 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Farewell, Anne, 1961 (författare)
- Gothenburg University,Göteborgs universitet,CARe - Centrum för antibiotikaresistensforskning,Institutionen för kemi och molekylärbiologi,Centre for antibiotic resistance research, CARe,Department of Chemistry and Molecular Biology
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- Modin, Oskar, 1980 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2022-12-16
- 2022
- Engelska.
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Ingår i: Frontiers in Microbiology. - : Frontiers Media SA. - 1664-302X. ; 13
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.3...
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https://research.cha...
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https://gup.ub.gu.se...
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Abstract
Ämnesord
Stäng
- In single-chamber microbial electrolysis cells (MECs), organic compounds are oxidized at the anode, liberating electrons that are used for hydrogen evolution at the cathode. Microbial communities on the anode and cathode surfaces and in the bulk liquid determine the function of the MEC. The communities are complex, and their assembly processes are poorly understood. We investigated MEC performance and community composition in nine MECs with a carbon cloth anode and a cathode of carbon nanoparticles, titanium, or stainless steel. Differences in lag time during the startup of replicate MECs suggested that the initial colonization by electrogenic bacteria was stochastic. A network analysis revealed negative correlations between different putatively electrogenic Deltaproteobacteria on the anode. Proximity to the conductive anode surface is important for electrogens, so the competition for space could explain the observed negative correlations. The cathode communities were dominated by hydrogen-utilizing taxa such as Methanobacterium and had a much lower proportion of negative correlations than the anodes. This could be explained by the diffusion of hydrogen throughout the cathode biofilms, reducing the need to compete for space.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik -- Bioenergi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology -- Bioenergy (hsv//eng)
Nyckelord
- bioanode
- biocathode
- bioelectrochemical system (BES)
- microbial electrolysis cells (MECs)
- microbial community assembly
- bioanode
- biocathode
- bioelectrochemical system (BES)
- microbial community assembly
- microbial electrolysis cells (MECs)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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