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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleInteraction of copper with chitosan and succinic anhydride derivative - a factorial design evaluation of the chemisorption processpt_BR
dc.contributor.authorLima, ISpt_BR
dc.contributor.authorAiroldi, Cpt_BR
unicamp.authorUniv Estadual Campinas, Inst Quim, BR-13084971 Sao Paulo, Brazilpt_BR
dc.subjectsuccinic anhydridept_BR
dc.subjectchitosanpt_BR
dc.subjectadsorptionpt_BR
dc.subjectfactorial designpt_BR
dc.subject.wosAtomic-absorption-spectrometrypt_BR
dc.subject.wosMetal-ion Enrichmentpt_BR
dc.subject.wosSilica-gelpt_BR
dc.subject.wosO,n-carboxymethyl Chitosanpt_BR
dc.subject.wosThermodynamic Datapt_BR
dc.subject.wosZinc Ionspt_BR
dc.subject.wosAdsorptionpt_BR
dc.subject.wosCationspt_BR
dc.subject.wosChitinpt_BR
dc.subject.wosAcidpt_BR
dc.description.abstractAdsorption processes involving copper on chitosan or chemically modified chitosan were studied by a 2(3) factorial design. Chitosan with a degree of deacetylation determined from infrared spectroscopy was obtained from chitin by treating with 50% sodium hydroxide solution at 383 K. After reacting with succinic acid anhydride the new biopolymer presented a capacity for cation adsorption comparable to chitosan. Near constant masses of 30.0 mg of individual samples of both biopolymers were stirred for different periods of time (2 and 4 h), with 40.0 cm(3) of cation solutions at 298 +/- 1 K. The degree of adsorption was determined from aliquots of the supernatant using atomic emission spectroscopy, and the number of moles adsorbed was calculated by difference. To establish the factorial design three factors were correlated: type of chitosan, time of stirring and identity of counter anions, in order to follow the cation-biopolymer interaction process. The chemically modified chitosan presented a better interactive performance, which differs from chitosan itself. From the factorial design it was concluded that the time necessary for this system to reach the equilibrium is 2 h and a decreased scale of anion influence followed the order: CuSO4 > CuCl2 > Cu(NO3)(2). (C) 2003 Elsevier B.V. All rights reserved.pt
dc.relation.ispartofColloids And Surfaces A-physicochemical And Engineering Aspectspt_BR
dc.relation.ispartofabbreviationColloid Surf. A-Physicochem. Eng. Asp.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryHolandapt_BR
dc.publisherElsevier Science Bvpt_BR
dc.date.issued2003pt_BR
dc.date.monthofcirculation45597pt_BR
dc.identifier.citationColloids And Surfaces A-physicochemical And Engineering Aspects. Elsevier Science Bv, v. 229, n. 41699, n. 129, n. 136, 2003.pt_BR
dc.language.isoenpt_BR
dc.description.volume229pt_BR
dc.description.issuenumber41699pt_BR
dc.description.firstpage129pt_BR
dc.description.lastpage136pt_BR
dc.rightsfechadopt_BR
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policypt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn0927-7757pt_BR
dc.identifier.wosidWOS:000187531800013pt_BR
dc.identifier.doi10.1016/S0927-7757(03)00310-8pt_BR
dc.date.available2014-11-20T04:21:33Z
dc.date.available2015-11-26T16:05:30Z-
dc.date.accessioned2014-11-20T04:21:33Z
dc.date.accessioned2015-11-26T16:05:30Z-
dc.description.provenanceMade available in DSpace on 2014-11-20T04:21:33Z (GMT). No. of bitstreams: 1 WOS000187531800013.pdf: 95041 bytes, checksum: 51f655374cee6d38debe0236be9c779e (MD5) Previous issue date: 2003en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:05:30Z (GMT). No. of bitstreams: 2 WOS000187531800013.pdf: 95041 bytes, checksum: 51f655374cee6d38debe0236be9c779e (MD5) WOS000187531800013.pdf.txt: 28685 bytes, checksum: d5edc7512f9684f0c1f4b205b5fe2b61 (MD5) Previous issue date: 2003en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60358pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/60358
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60358-
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