Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/2793 |
Resumo: | Three upflow fixed bed bioreactors treating an aqueous stream containing 2-fluorobenzoate were operated for a period of 7months, during which they were exposed to high organic loading rates and starvation. The reactors contained granular activated carbon (GAC), polyethylene (PE) particles and expanded clay (EC) respectively as growth support for microbial biofilms. The performance of the reactors was compared and the biofilm microbial population was followed by cell counting and denaturing gradient gel electrophoresis (DGGE). The reactor containing GAC always had 100% removal efficiency owing to the adsorption properties of thematerial combined with biodegradation. The GAC reactor also recovered better after starvation periods in the sense that it showed more stable behaviour than the reactors containing EC and PE. The highest biological elimination capacity was observed for the reactor containing EC, which reached 200mg day−1 L−1 during reactor start-up, but during long-termoperation the reactor containing GAC showed the highest biological elimination capacity, 140mg day−1 L−1. DGGE analysis indicated that starvation periods seemed to be responsible for shifts in the microbial population. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials2-fluorobenzoateUpflow Fixed bed bioreactorsGranulated activated carbonExpanded clayStarvationDGGEThree upflow fixed bed bioreactors treating an aqueous stream containing 2-fluorobenzoate were operated for a period of 7months, during which they were exposed to high organic loading rates and starvation. The reactors contained granular activated carbon (GAC), polyethylene (PE) particles and expanded clay (EC) respectively as growth support for microbial biofilms. The performance of the reactors was compared and the biofilm microbial population was followed by cell counting and denaturing gradient gel electrophoresis (DGGE). The reactor containing GAC always had 100% removal efficiency owing to the adsorption properties of thematerial combined with biodegradation. The GAC reactor also recovered better after starvation periods in the sense that it showed more stable behaviour than the reactors containing EC and PE. The highest biological elimination capacity was observed for the reactor containing EC, which reached 200mg day−1 L−1 during reactor start-up, but during long-termoperation the reactor containing GAC showed the highest biological elimination capacity, 140mg day−1 L−1. DGGE analysis indicated that starvation periods seemed to be responsible for shifts in the microbial population.Wiley BlackwellVeritati - Repositório Institucional da Universidade Católica PortuguesaEmanuelsson, Maria A.E.Henriques, Isabel S.Jorge, Ruben M FerreiraCastro, Paula M. L.2010-10-11T15:00:12Z20062006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/2793engEMANUELSSON, Maria A.E...[et al.] - Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials. Journal of Chemical Technology and Biotechnology. ISSN 0268–2575. Vol. 81, n.º 9 (2006), p. 1577–158510.1002/jctb.1565info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-12T17:09:12ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
title |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
spellingShingle |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials Emanuelsson, Maria A.E. 2-fluorobenzoate Upflow Fixed bed bioreactors Granulated activated carbon Expanded clay Starvation DGGE |
title_short |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
title_full |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
title_fullStr |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
title_full_unstemmed |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
title_sort |
Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials |
author |
Emanuelsson, Maria A.E. |
author_facet |
Emanuelsson, Maria A.E. Henriques, Isabel S. Jorge, Ruben M Ferreira Castro, Paula M. L. |
author_role |
author |
author2 |
Henriques, Isabel S. Jorge, Ruben M Ferreira Castro, Paula M. L. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Emanuelsson, Maria A.E. Henriques, Isabel S. Jorge, Ruben M Ferreira Castro, Paula M. L. |
dc.subject.por.fl_str_mv |
2-fluorobenzoate Upflow Fixed bed bioreactors Granulated activated carbon Expanded clay Starvation DGGE |
topic |
2-fluorobenzoate Upflow Fixed bed bioreactors Granulated activated carbon Expanded clay Starvation DGGE |
description |
Three upflow fixed bed bioreactors treating an aqueous stream containing 2-fluorobenzoate were operated for a period of 7months, during which they were exposed to high organic loading rates and starvation. The reactors contained granular activated carbon (GAC), polyethylene (PE) particles and expanded clay (EC) respectively as growth support for microbial biofilms. The performance of the reactors was compared and the biofilm microbial population was followed by cell counting and denaturing gradient gel electrophoresis (DGGE). The reactor containing GAC always had 100% removal efficiency owing to the adsorption properties of thematerial combined with biodegradation. The GAC reactor also recovered better after starvation periods in the sense that it showed more stable behaviour than the reactors containing EC and PE. The highest biological elimination capacity was observed for the reactor containing EC, which reached 200mg day−1 L−1 during reactor start-up, but during long-termoperation the reactor containing GAC showed the highest biological elimination capacity, 140mg day−1 L−1. DGGE analysis indicated that starvation periods seemed to be responsible for shifts in the microbial population. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 2006-01-01T00:00:00Z 2010-10-11T15:00:12Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.14/2793 |
url |
http://hdl.handle.net/10400.14/2793 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
EMANUELSSON, Maria A.E...[et al.] - Biodegradation of 2-fluorobenzoate in upflow fixed bed bioreactors operated with different growth support materials. Journal of Chemical Technology and Biotechnology. ISSN 0268–2575. Vol. 81, n.º 9 (2006), p. 1577–1585 10.1002/jctb.1565 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell |
publisher.none.fl_str_mv |
Wiley Blackwell |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777303116241174528 |