Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Pham, Hai The, Boon, Nico, Aelterman, Peter, Clauwaert, Peter, De Schamphelaire, Liesje, Van Oostveldt, Patrick, Verbeken, Kim, Rabaey, Korneel, Verstraete, Willy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2008
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
_version_ 1782289397492744192
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
work_keys_str_mv AT phamhaithe highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT boonnico highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT aeltermanpeter highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT clauwaertpeter highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT deschamphelaireliesje highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT vanoostveldtpatrick highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT verbekenkim highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT rabaeykorneel highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell
AT verstraetewilly highshearenrichmentimprovestheperformanceoftheanodophilicmicrobialconsortiuminamicrobialfuelcell