4-amine-2-mercaptopyrimidine modified silica gel applied in Cd(II) and Pb(II) extraction from an aqueous medium

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dc.contributor.authorPereira, Adriano S. [UNESP]
dc.contributor.authorFerreira, Guilherme [UNESP]
dc.contributor.authorCaetano, Laercio [UNESP]
dc.contributor.authorCastro, Renata S. D.
dc.contributor.authordos Santos, Ademir
dc.contributor.authorPadilha, Pedro M. [UNESP]
dc.contributor.authorCastro, Gustavo R. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionDept Fitotecnia & Tecnol Alimentos
dc.contributor.institutionDept Quim Analit
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2014-05-20T13:29:44Z
dc.date.available2014-05-20T13:29:44Z
dc.date.issued2010-01-01
dc.description.abstractThis paper discusses silica surface modification by a process involving a two-step reaction: anchoring of a silylating agent, followed by an attachment of a 4-amino-2-mercaptopyrimidine molecule. The modified material (Si-BP) was successfully characterized by the FTIR spectra, which revealed amine absorption bands, and through (13)C and (29)Si NMR spectra, which confirm the proposed structure of the modified silica (Si-BP). Si-BP was used to extract cadmium and lead from an aqueous medium at 298 K. The Si-BP kinetics towards metal ions was very fast, i.e., about 10 minutes, although extraction was significantly impaired at pH 3. The series of adsorption isotherms were adjusted to a modified Langmuir equation and the maximum extraction capacity was 0.193 and 0.387 mmol g(-1) for Cd(II) and Pb(II), respectively. An analysis of the empty set values lead to the inference that the resulting metal ligand complex was type 1:1.en
dc.description.affiliationUniv Estadual Paulista, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationDept Fitotecnia & Tecnol Alimentos, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationDept Quim Analit, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUNESP, IB, Dept Quim & Bioquim, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUniv Estadual Campinas, Inst Nacl Ciência & Tecnol Bioanalit, BR-13084971 Campinas, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUNESP, IB, Dept Quim & Bioquim, BR-18618000 Botucatu, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 06/54946-9
dc.format.extent7-11
dc.identifierhttp://dx.doi.org/10.2478/v10026-010-0002-5
dc.identifier.citationPolish Journal of Chemical Technology. Warsaw: Versita, v. 12, n. 1, p. 7-11, 2010.
dc.identifier.doi10.2478/v10026-010-0002-5
dc.identifier.fileWOS000276732700002.pdf
dc.identifier.issn1509-8117
dc.identifier.lattes6981448637456391
dc.identifier.orcid0000-0003-4179-0574
dc.identifier.urihttp://hdl.handle.net/11449/10053
dc.identifier.wosWOS:000276732700002
dc.language.isoeng
dc.publisherVersita
dc.relation.ispartofPolish Journal of Chemical Technology
dc.relation.ispartofjcr0.550
dc.relation.ispartofsjr0,202
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subject4-amine-2-mercaptopyrimidineen
dc.subjectsilicaen
dc.subjectmetal extractionen
dc.subjectaqueous mediumen
dc.title4-amine-2-mercaptopyrimidine modified silica gel applied in Cd(II) and Pb(II) extraction from an aqueous mediumen
dc.typeArtigo
dcterms.licensehttp://www.degruyter.com/view/supplement/s18994741_Versita_Open_Access_License.pdf
dcterms.rightsHolderVersita
unesp.author.lattes6981448637456391[6]
unesp.author.orcid0000-0003-4179-0574[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Física e Química - FEIS
Artigos - Química e Bioquímica - IBB