Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite

Detalhes bibliográficos
Autor(a) principal: Galindo,Luz Stella Gaona
Data de Publicação: 2013
Outros Autores: Almeida Neto,Ambrósio Florêncio de, Silva,Meuris Gurgel Carlos da, Vieira,Melissa Gurgel Adeodato
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200030
Resumo: This paper describes the adsorption of Cd2+and Pb2+ions using sodic bentonite clay type Fluidgel modified. The Fluidgelbefore and after chemical modification and thermal activation was characterized by different techniques including X-ray diffraction, thermal analysis, Fourier transform infrared, surface area, helium pycnometry, cation exchange capacity and scanning electron microscopy. Pseudo-first order, pseudo-second order and intra-particle diffusion models were used to analyze the kinetic curves. Equilibrium data were analyzed using Langmuir and Freundlich models. The thermodynamic study indicated that lead adsorption process is endothermic and interactions between clays and solutions of lead occurred spontaneously, while cadmium adsorption revealed an exothermic and spontaneous nature. The maximum removal efficiencies were 97.62% for Cd(II) using Fluidgelmodified chemically and 91.08% for lead by Fluidgel modified chemical and thermally.
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spelling Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentoniteadsorptionbentonite clayleadcadmiumThis paper describes the adsorption of Cd2+and Pb2+ions using sodic bentonite clay type Fluidgel modified. The Fluidgelbefore and after chemical modification and thermal activation was characterized by different techniques including X-ray diffraction, thermal analysis, Fourier transform infrared, surface area, helium pycnometry, cation exchange capacity and scanning electron microscopy. Pseudo-first order, pseudo-second order and intra-particle diffusion models were used to analyze the kinetic curves. Equilibrium data were analyzed using Langmuir and Freundlich models. The thermodynamic study indicated that lead adsorption process is endothermic and interactions between clays and solutions of lead occurred spontaneously, while cadmium adsorption revealed an exothermic and spontaneous nature. The maximum removal efficiencies were 97.62% for Cd(II) using Fluidgelmodified chemically and 91.08% for lead by Fluidgel modified chemical and thermally.ABM, ABC, ABPol2013-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200030Materials Research v.16 n.2 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000007info:eu-repo/semantics/openAccessGalindo,Luz Stella GaonaAlmeida Neto,Ambrósio Florêncio deSilva,Meuris Gurgel Carlos daVieira,Melissa Gurgel Adeodatoeng2013-03-19T00:00:00Zoai:scielo:S1516-14392013000200030Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-03-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
title Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
spellingShingle Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
Galindo,Luz Stella Gaona
adsorption
bentonite clay
lead
cadmium
title_short Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
title_full Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
title_fullStr Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
title_full_unstemmed Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
title_sort Removal of Cadmium(II) and Lead(II) ions from aqueous phase on sodic bentonite
author Galindo,Luz Stella Gaona
author_facet Galindo,Luz Stella Gaona
Almeida Neto,Ambrósio Florêncio de
Silva,Meuris Gurgel Carlos da
Vieira,Melissa Gurgel Adeodato
author_role author
author2 Almeida Neto,Ambrósio Florêncio de
Silva,Meuris Gurgel Carlos da
Vieira,Melissa Gurgel Adeodato
author2_role author
author
author
dc.contributor.author.fl_str_mv Galindo,Luz Stella Gaona
Almeida Neto,Ambrósio Florêncio de
Silva,Meuris Gurgel Carlos da
Vieira,Melissa Gurgel Adeodato
dc.subject.por.fl_str_mv adsorption
bentonite clay
lead
cadmium
topic adsorption
bentonite clay
lead
cadmium
description This paper describes the adsorption of Cd2+and Pb2+ions using sodic bentonite clay type Fluidgel modified. The Fluidgelbefore and after chemical modification and thermal activation was characterized by different techniques including X-ray diffraction, thermal analysis, Fourier transform infrared, surface area, helium pycnometry, cation exchange capacity and scanning electron microscopy. Pseudo-first order, pseudo-second order and intra-particle diffusion models were used to analyze the kinetic curves. Equilibrium data were analyzed using Langmuir and Freundlich models. The thermodynamic study indicated that lead adsorption process is endothermic and interactions between clays and solutions of lead occurred spontaneously, while cadmium adsorption revealed an exothermic and spontaneous nature. The maximum removal efficiencies were 97.62% for Cd(II) using Fluidgelmodified chemically and 91.08% for lead by Fluidgel modified chemical and thermally.
publishDate 2013
dc.date.none.fl_str_mv 2013-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200030
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000200030
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392013005000007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.16 n.2 2013
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212662813655040

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