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High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell
In many microbial bioreactors, high shear rates result in strong attachment of microbes and dense biofilms. In this study, high shear rates were applied to enrich an anodophilic microbial consortium in a microbial fuel cell (MFC). Enrichment at a shear rate of about 120 s(−1) resulted in the product...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815290/ https://www.ncbi.nlm.nih.gov/pubmed/21261869 http://dx.doi.org/10.1111/j.1751-7915.2008.00049.x |
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author | Pham, Hai The Boon, Nico Aelterman, Peter Clauwaert, Peter De Schamphelaire, Liesje Van Oostveldt, Patrick Verbeken, Kim Rabaey, Korneel Verstraete, Willy |
author_facet | Pham, Hai The Boon, Nico Aelterman, Peter Clauwaert, Peter De Schamphelaire, Liesje Van Oostveldt, Patrick Verbeken, Kim Rabaey, Korneel Verstraete, Willy |
author_sort | Pham, Hai The |
collection | PubMed |
description | In many microbial bioreactors, high shear rates result in strong attachment of microbes and dense biofilms. In this study, high shear rates were applied to enrich an anodophilic microbial consortium in a microbial fuel cell (MFC). Enrichment at a shear rate of about 120 s(−1) resulted in the production of a current and power output two to three times higher than those in the case of low shear rates (around 0.3 s(−1)). Biomass and biofilm analyses showed that the anodic biofilm from the MFC enriched under high shear rate conditions, in comparison with that under low shear rate conditions, had a doubled average thickness and the biomass density increased with a factor 5. The microbial community of the former, as analysed by DGGE, was significantly different from that of the latter. The results showed that enrichment by applying high shear rates in an MFC can result in a specific electrochemically active biofilm that is thicker and denser and attaches better, and hence has a better performance. |
format | Online Article Text |
id | pubmed-3815290 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-38152902014-02-12 High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell Pham, Hai The Boon, Nico Aelterman, Peter Clauwaert, Peter De Schamphelaire, Liesje Van Oostveldt, Patrick Verbeken, Kim Rabaey, Korneel Verstraete, Willy Microb Biotechnol Research Articles In many microbial bioreactors, high shear rates result in strong attachment of microbes and dense biofilms. In this study, high shear rates were applied to enrich an anodophilic microbial consortium in a microbial fuel cell (MFC). Enrichment at a shear rate of about 120 s(−1) resulted in the production of a current and power output two to three times higher than those in the case of low shear rates (around 0.3 s(−1)). Biomass and biofilm analyses showed that the anodic biofilm from the MFC enriched under high shear rate conditions, in comparison with that under low shear rate conditions, had a doubled average thickness and the biomass density increased with a factor 5. The microbial community of the former, as analysed by DGGE, was significantly different from that of the latter. The results showed that enrichment by applying high shear rates in an MFC can result in a specific electrochemically active biofilm that is thicker and denser and attaches better, and hence has a better performance. Blackwell Publishing Ltd 2008-11 2008-10-14 /pmc/articles/PMC3815290/ /pubmed/21261869 http://dx.doi.org/10.1111/j.1751-7915.2008.00049.x Text en © 2008 The Authors. Journal compilation © 2008 Society for Applied Microbiology and Blackwell Publishing Ltd |
spellingShingle | Research Articles Pham, Hai The Boon, Nico Aelterman, Peter Clauwaert, Peter De Schamphelaire, Liesje Van Oostveldt, Patrick Verbeken, Kim Rabaey, Korneel Verstraete, Willy High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title | High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title_full | High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title_fullStr | High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title_full_unstemmed | High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title_short | High shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
title_sort | high shear enrichment improves the performance of the anodophilic microbial consortium in a microbial fuel cell |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815290/ https://www.ncbi.nlm.nih.gov/pubmed/21261869 http://dx.doi.org/10.1111/j.1751-7915.2008.00049.x |
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