Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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/1822/42439 |
Resumo: | A Streptococcus equisimilis biofilm supported on clays was used to decontaminate aqueous solutions containing diethylketone (DEK), nickel and/or cadmium, in a batch mode. The interaction between the sorbent matrices and the different sorbates, individually and in binary combinations, was evaluated. It was demonstrated that the growth of S. equisimilis is negatively affected by concentrations higher than 80 mg l1 of Ni and 5 mg l1 of Cd. DEK and Cd uptakes are positively correlated with the mass of vermiculite without biofilm, as observed in singular sorbate experiments. The same trend is observed for sorption percentages, reporting to the initial solution concentrations, as values higher than 90% were achieved for both pollutants. Although Ni uptake decreases as the mass of vermiculite increases, the percentage of sorbed Ni increased, reaching a maximum value of 100%. It was demonstrated that Ni and DEK, when mixed, present higher sorption values, suggesting a synergetic interaction between these two pollutants, whereas when DEK and Cd are mixed, the sorption of DEK decreases significantly, revealing a negative effect of Cd over the retention of DEK. It was also observable that for sorbent mass higher than 0.085 g the simultaneous uptake of DEK and Ni by the biofilm supported on vermiculite decreases, but the sorption percentage tends to increase, reaching values of 100% for 40 g of vermiculite. As the mass of sorbent increases the sorption percentage of both sorbates, DEK and Cd, tends to increase, reaching maximum values higher than 98%. These sorption systems are effective and the use of a biofilm may be an important advantage for the treatment of aqueous solutions contaminated with specific pollutants. |
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Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculiteCadmiumDiethylketoneNickelSorptionStreptococcus equisimilisVermiculiteScience & TechnologyA Streptococcus equisimilis biofilm supported on clays was used to decontaminate aqueous solutions containing diethylketone (DEK), nickel and/or cadmium, in a batch mode. The interaction between the sorbent matrices and the different sorbates, individually and in binary combinations, was evaluated. It was demonstrated that the growth of S. equisimilis is negatively affected by concentrations higher than 80 mg l1 of Ni and 5 mg l1 of Cd. DEK and Cd uptakes are positively correlated with the mass of vermiculite without biofilm, as observed in singular sorbate experiments. The same trend is observed for sorption percentages, reporting to the initial solution concentrations, as values higher than 90% were achieved for both pollutants. Although Ni uptake decreases as the mass of vermiculite increases, the percentage of sorbed Ni increased, reaching a maximum value of 100%. It was demonstrated that Ni and DEK, when mixed, present higher sorption values, suggesting a synergetic interaction between these two pollutants, whereas when DEK and Cd are mixed, the sorption of DEK decreases significantly, revealing a negative effect of Cd over the retention of DEK. It was also observable that for sorbent mass higher than 0.085 g the simultaneous uptake of DEK and Ni by the biofilm supported on vermiculite decreases, but the sorption percentage tends to increase, reaching values of 100% for 40 g of vermiculite. As the mass of sorbent increases the sorption percentage of both sorbates, DEK and Cd, tends to increase, reaching maximum values higher than 98%. These sorption systems are effective and the use of a biofilm may be an important advantage for the treatment of aqueous solutions contaminated with specific pollutants.The authors would like to thank the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UID/BIO/04469/2013 unit and COMPETE 2020 (POCI-01-0145-FEDER-006684). Filomena Costa thanks FCT for a PhD grant (SFRH/BD/77666/2011).ElsevierUniversidade do MinhoCosta, FilomenaTavares, T.2016-112016-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/42439engCosta, Filomena; Tavares, T., Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite. International Biodeterioration and Biodegradation, 115, 119-132, 2016.0964-83050964-830510.1016/j.ibiod.2016.08.004info: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:RCAAP2023-07-21T12:43:07Zoai:repositorium.sdum.uminho.pt:1822/42439Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:40:31.249856Repositório 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 nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
title |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
spellingShingle |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite Costa, Filomena Cadmium Diethylketone Nickel Sorption Streptococcus equisimilis Vermiculite Science & Technology |
title_short |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
title_full |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
title_fullStr |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
title_full_unstemmed |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
title_sort |
Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite |
author |
Costa, Filomena |
author_facet |
Costa, Filomena Tavares, T. |
author_role |
author |
author2 |
Tavares, T. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Costa, Filomena Tavares, T. |
dc.subject.por.fl_str_mv |
Cadmium Diethylketone Nickel Sorption Streptococcus equisimilis Vermiculite Science & Technology |
topic |
Cadmium Diethylketone Nickel Sorption Streptococcus equisimilis Vermiculite Science & Technology |
description |
A Streptococcus equisimilis biofilm supported on clays was used to decontaminate aqueous solutions containing diethylketone (DEK), nickel and/or cadmium, in a batch mode. The interaction between the sorbent matrices and the different sorbates, individually and in binary combinations, was evaluated. It was demonstrated that the growth of S. equisimilis is negatively affected by concentrations higher than 80 mg l1 of Ni and 5 mg l1 of Cd. DEK and Cd uptakes are positively correlated with the mass of vermiculite without biofilm, as observed in singular sorbate experiments. The same trend is observed for sorption percentages, reporting to the initial solution concentrations, as values higher than 90% were achieved for both pollutants. Although Ni uptake decreases as the mass of vermiculite increases, the percentage of sorbed Ni increased, reaching a maximum value of 100%. It was demonstrated that Ni and DEK, when mixed, present higher sorption values, suggesting a synergetic interaction between these two pollutants, whereas when DEK and Cd are mixed, the sorption of DEK decreases significantly, revealing a negative effect of Cd over the retention of DEK. It was also observable that for sorbent mass higher than 0.085 g the simultaneous uptake of DEK and Ni by the biofilm supported on vermiculite decreases, but the sorption percentage tends to increase, reaching values of 100% for 40 g of vermiculite. As the mass of sorbent increases the sorption percentage of both sorbates, DEK and Cd, tends to increase, reaching maximum values higher than 98%. These sorption systems are effective and the use of a biofilm may be an important advantage for the treatment of aqueous solutions contaminated with specific pollutants. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11 2016-11-01T00:00:00Z |
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/1822/42439 |
url |
http://hdl.handle.net/1822/42439 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Costa, Filomena; Tavares, T., Biosorption of nickel and cadmium in the presence of diethylketone by a Streptococcus equisimilis biofilm supported on vermiculite. International Biodeterioration and Biodegradation, 115, 119-132, 2016. 0964-8305 0964-8305 10.1016/j.ibiod.2016.08.004 |
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 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132950952935424 |