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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleKinetic and Isotherm Studies of Ni2+ Adsorption on Poly(methacrylic acid) Synthesized through a Hierarchical Double-Imprinting Method Using a Ni2+ Ion and Cationic Surfactant as Templatespt_BR
dc.contributor.authorde Oliveira, FMpt_BR
dc.contributor.authorSomera, BFpt_BR
dc.contributor.authorRibeiro, ESpt_BR
dc.contributor.authorSegatelli, MGpt_BR
dc.contributor.authorYabe, MJSpt_BR
dc.contributor.authorGalunin, Ept_BR
dc.contributor.authorTarley, CRTpt_BR
unicamp.authorde Oliveira, Fernanda Midori Somera, Bruna Fabrin Segatelli, Mariana Gava Santos Yabe, Maria Josefa Galunin, Evgeny Teixeira Tarley, Cesar Ricardo Univ Estadual Londrina UEL, Dept Quim, Ctr Ciencias Exatas, BR-86050482 Londrina, PR, Brazilpt_BR
unicamp.authorRibeiro, Emerson Schwingel Univ Fed Rio de Janeiro UFRJ, Inst Quim, BR-21941909 Rio De Janeiro, RJ, Brazilpt_BR
unicamp.authorTeixeira Tarley, Cesar Ricardo Univ Estadual Campinas UNICAMP, Dept Quim Analit, Inst Quim, Inst Nacl Ciencia Tecnol INCT Bioanalit, BR-13083970 Campinas, SP, Brazilpt_BR
dc.subject.wosSolid-phase Extractionpt_BR
dc.subject.wosInorganic Hybrid Sorbentpt_BR
dc.subject.wosSelective Separationpt_BR
dc.description.abstractA novel poly(methacrylic acid) material (IIP/CTAB) was prepared by a hierarchical double-imprinting process with Ni2+ ion and cationic surfactant-cetyltrimethylammonium bromide (CTAB) as templates, and it was employed to adsorb Ni2+ ions from aqueous medium. Other poly(methacrylic acid) materials- single imprinted (IIP/no CTAB) and nonimprinted (NIP/no CTAB) were investigated in adsorption studies. All the synthesized polymers were characterized by FTIR, SEM, and nitrogen adsorption-desorption isotherm The maximum Ni2+ adsorption capacities of IIP/CTAB and NIP/no CTAB were found to be 33.31 and 18.64 mg respectively, at pH 7.25. The relative selectivity coefficient (k') values for Ni2+/Cu2+, Ni2+/Mn+, Ni2+/Co2+ and Ni2+/Pb2+ systems were higher than 1, thus confirming the significant improvement in the selectivity of the polymer. The kinetic data were described very well by the pseudo-secona-order model, thereby confirming the chemical nature of the Ni2+ adsorption (chemisorption), whereas the dual-site Langmuir-Freundlich equation provided the best fit to the isotherm data, suggesting the existence of two kinds of adsorption sites (with low and high binding energies) on the polymer surface. The high chemical stability of IIP/CTAB was verified with 300 Ni2+ adsorption-desorption cycles using 1.0 mol L-1 HNO3 as stripping agentpt
dc.relation.ispartofIndustrial & Engineering Chemistry Researchpt_BR
dc.relation.ispartofabbreviationInd. Eng. Chem. Res.pt_BR
dc.publisherAmer Chemical Socpt_BR
dc.identifier.citationIndustrial & Engineering Chemistry Research. Amer Chemical Soc, v. 52, n. 25, n. 8550, n. 8557, 2013.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipInstituto Nacional de Ciencia e Tecnologia de Bioanalitica (INCT) [573672/2008-3]pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsordocumentnumberCNPq [471655/2011-2, 308580/2010-9, 471912/2011-5]pt
dc.description.sponsordocumentnumberInstituto Nacional de Ciencia e Tecnologia de Bioanalitica (INCT) [573672/2008-3]pt
dc.description.provenanceMade available in DSpace on 2014-07-30T14:35:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:57:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
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