Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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/1822/7833 |
Resumo: | Two mini-columns partially filled with granular activated carbon (GAC) and/or a natural zeolite, covered by a bacterial biofilm of Arthrobacter viscosus, were used in a continuous flow system to remove Cr (VI) from solutions with initial concentration of 70 mg/l and a working pH ranging between 4.5 and 5.5. Three different set-up’s were used: two columns in series filled GAC covered with a biofilm, two columns in series filled with zeolite covered with a biofilm and a column filled with GAC followed by another column filled with zeolite, both supports covered with biofilm. Comparatively, the biosorption system supported on GAC reaches similar removal values, 19%, as the one supported on the zeolite, 18%, but when these two beds are used in combination better performances are reached, i.e. 42% removal. The maximum uptake values ranged from 0.57 mgCr/gSupport to 3.58 mgCr/gSupport. The interactions between metal ions and functional groups on the cell wall surface of the biomass were confirmed by FTIR. GAC was regenerated with steam draughting and reused twice. The first regeneration caused a decrease in the removal capacity of 38% and the second regeneration caused a total decrease in the removal capacity of 76%. |
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Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeoliteActivated carbonBiosorptionChromium (VI)ZeolitebiofilmScience & TechnologyTwo mini-columns partially filled with granular activated carbon (GAC) and/or a natural zeolite, covered by a bacterial biofilm of Arthrobacter viscosus, were used in a continuous flow system to remove Cr (VI) from solutions with initial concentration of 70 mg/l and a working pH ranging between 4.5 and 5.5. Three different set-up’s were used: two columns in series filled GAC covered with a biofilm, two columns in series filled with zeolite covered with a biofilm and a column filled with GAC followed by another column filled with zeolite, both supports covered with biofilm. Comparatively, the biosorption system supported on GAC reaches similar removal values, 19%, as the one supported on the zeolite, 18%, but when these two beds are used in combination better performances are reached, i.e. 42% removal. The maximum uptake values ranged from 0.57 mgCr/gSupport to 3.58 mgCr/gSupport. The interactions between metal ions and functional groups on the cell wall surface of the biomass were confirmed by FTIR. GAC was regenerated with steam draughting and reused twice. The first regeneration caused a decrease in the removal capacity of 38% and the second regeneration caused a total decrease in the removal capacity of 76%.La Habana UniversityMinistério da Ciência e Tecnologia; FEDERFundação para a Ciência e a Tecnologia (FCT)ElsevierUniversidade do MinhoLameiras, Sandra Raquel de VasconcelosQuintelas, C.Tavares, M. T.2008-032008-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/7833eng"Bioresource Technology". ISSN 0960-8524. 99:4 (Mar. 2008) 801-806.0960-852410.1016/j.biortech.2007.01.04017368891info: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:RCAAP2023-07-21T12:17:28Zoai:repositorium.sdum.uminho.pt:1822/7833Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:10:04.922530Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
title |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
spellingShingle |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite Lameiras, Sandra Raquel de Vasconcelos Activated carbon Biosorption Chromium (VI) Zeolite biofilm Science & Technology |
title_short |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
title_full |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
title_fullStr |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
title_full_unstemmed |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
title_sort |
Biosorption of Cr (VI) using a bacterial biofilm supported on granular activated carbon and on zeolite |
author |
Lameiras, Sandra Raquel de Vasconcelos |
author_facet |
Lameiras, Sandra Raquel de Vasconcelos Quintelas, C. Tavares, M. T. |
author_role |
author |
author2 |
Quintelas, C. Tavares, M. T. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Lameiras, Sandra Raquel de Vasconcelos Quintelas, C. Tavares, M. T. |
dc.subject.por.fl_str_mv |
Activated carbon Biosorption Chromium (VI) Zeolite biofilm Science & Technology |
topic |
Activated carbon Biosorption Chromium (VI) Zeolite biofilm Science & Technology |
description |
Two mini-columns partially filled with granular activated carbon (GAC) and/or a natural zeolite, covered by a bacterial biofilm of Arthrobacter viscosus, were used in a continuous flow system to remove Cr (VI) from solutions with initial concentration of 70 mg/l and a working pH ranging between 4.5 and 5.5. Three different set-up’s were used: two columns in series filled GAC covered with a biofilm, two columns in series filled with zeolite covered with a biofilm and a column filled with GAC followed by another column filled with zeolite, both supports covered with biofilm. Comparatively, the biosorption system supported on GAC reaches similar removal values, 19%, as the one supported on the zeolite, 18%, but when these two beds are used in combination better performances are reached, i.e. 42% removal. The maximum uptake values ranged from 0.57 mgCr/gSupport to 3.58 mgCr/gSupport. The interactions between metal ions and functional groups on the cell wall surface of the biomass were confirmed by FTIR. GAC was regenerated with steam draughting and reused twice. The first regeneration caused a decrease in the removal capacity of 38% and the second regeneration caused a total decrease in the removal capacity of 76%. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03 2008-03-01T00:00:00Z |
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/1822/7833 |
url |
http://hdl.handle.net/1822/7833 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Bioresource Technology". ISSN 0960-8524. 99:4 (Mar. 2008) 801-806. 0960-8524 10.1016/j.biortech.2007.01.040 17368891 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799132528573939712 |