Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions

Detalhes bibliográficos
Autor(a) principal: Monteiro, Cristina M.
Data de Publicação: 2009
Outros Autores: Castro, Paula M. L., Malcata, F. Xavier
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.14/2598
Resumo: The ability of a wild strain of Scenedesmus obliquus, isolated from a heavy metal-contaminated environment, to remove Cd2+ from aqueous solutions was studied at several initial concentrations. Viable biomass removed metal to a maximum extent of 11.4 mgCd/g at 1 mgCd/l, with most Cd2+ being adsorbed onto the cell surface. A commercially available strain (ACOI 598) of the same microalga species was also exposed to the same Cd concentrations, and similar results were obtained for the maximum extent of metal removal. Heat-inactivated cells removed a maximum of 6.04 mgCd/g at 0.5 mgCd/l. The highest extent of metal removal, analyzed at various pH values, was 0.09 mgCd/g at pH 7.0. Both strains of the microalga tested have proven effective in removing a toxic heavy metal from aqueous solutions, hence supporting their choice for bioremediation strategies of industrial effluents.
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spelling Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutionsMicroalgaHeavy metalBioaccumulationBiosorptionpHInactivated biomassThe ability of a wild strain of Scenedesmus obliquus, isolated from a heavy metal-contaminated environment, to remove Cd2+ from aqueous solutions was studied at several initial concentrations. Viable biomass removed metal to a maximum extent of 11.4 mgCd/g at 1 mgCd/l, with most Cd2+ being adsorbed onto the cell surface. A commercially available strain (ACOI 598) of the same microalga species was also exposed to the same Cd concentrations, and similar results were obtained for the maximum extent of metal removal. Heat-inactivated cells removed a maximum of 6.04 mgCd/g at 0.5 mgCd/l. The highest extent of metal removal, analyzed at various pH values, was 0.09 mgCd/g at pH 7.0. Both strains of the microalga tested have proven effective in removing a toxic heavy metal from aqueous solutions, hence supporting their choice for bioremediation strategies of industrial effluents.Springer VerlagVeritati - Repositório Institucional da Universidade Católica PortuguesaMonteiro, Cristina M.Castro, Paula M. L.Malcata, F. Xavier2010-09-30T15:02:47Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/2598eng"World Journal of Microbiology and Biotechnology". ISSN 1573-0972. 25:9 (2009) 1573–157810.1007/s11274-009-0046-yinfo: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:RCAAP2023-10-24T01:32:31Zoai:repositorio.ucp.pt:10400.14/2598Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:04:52.181996Repositório 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 Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
title Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
spellingShingle Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
Monteiro, Cristina M.
Microalga
Heavy metal
Bioaccumulation
Biosorption
pH
Inactivated biomass
title_short Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
title_full Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
title_fullStr Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
title_full_unstemmed Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
title_sort Use of the microalga Scenedesmus obliquus to remove cadmium cations from aqueous solutions
author Monteiro, Cristina M.
author_facet Monteiro, Cristina M.
Castro, Paula M. L.
Malcata, F. Xavier
author_role author
author2 Castro, Paula M. L.
Malcata, F. Xavier
author2_role author
author
dc.contributor.none.fl_str_mv Veritati - Repositório Institucional da Universidade Católica Portuguesa
dc.contributor.author.fl_str_mv Monteiro, Cristina M.
Castro, Paula M. L.
Malcata, F. Xavier
dc.subject.por.fl_str_mv Microalga
Heavy metal
Bioaccumulation
Biosorption
pH
Inactivated biomass
topic Microalga
Heavy metal
Bioaccumulation
Biosorption
pH
Inactivated biomass
description The ability of a wild strain of Scenedesmus obliquus, isolated from a heavy metal-contaminated environment, to remove Cd2+ from aqueous solutions was studied at several initial concentrations. Viable biomass removed metal to a maximum extent of 11.4 mgCd/g at 1 mgCd/l, with most Cd2+ being adsorbed onto the cell surface. A commercially available strain (ACOI 598) of the same microalga species was also exposed to the same Cd concentrations, and similar results were obtained for the maximum extent of metal removal. Heat-inactivated cells removed a maximum of 6.04 mgCd/g at 0.5 mgCd/l. The highest extent of metal removal, analyzed at various pH values, was 0.09 mgCd/g at pH 7.0. Both strains of the microalga tested have proven effective in removing a toxic heavy metal from aqueous solutions, hence supporting their choice for bioremediation strategies of industrial effluents.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01T00:00:00Z
2010-09-30T15:02:47Z
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/10400.14/2598
url http://hdl.handle.net/10400.14/2598
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "World Journal of Microbiology and Biotechnology". ISSN 1573-0972. 25:9 (2009) 1573–1578
10.1007/s11274-009-0046-y
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 Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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