Dithiocarbamated chitosan as a potent biopolymer for toxic cation remediation

dc.creatorKhan, A
dc.creatorBadshah, S
dc.creatorAiroldi, C
dc.date2011
dc.dateOCT 1
dc.date2014-07-30T14:49:16Z
dc.date2015-11-26T17:42:45Z
dc.date2014-07-30T14:49:16Z
dc.date2015-11-26T17:42:45Z
dc.date.accessioned2018-03-29T00:24:44Z
dc.date.available2018-03-29T00:24:44Z
dc.identifierColloids And Surfaces B-biointerfaces. Elsevier Science Bv, v. 87, n. 1, n. 88, n. 95, 2011.
dc.identifier0927-7765
dc.identifierWOS:000293055500014
dc.identifier10.1016/j.colsurfb.2011.05.006
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/62366
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/62366
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287395
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe biopolymer chitosan was chemically modified with dithiocarbamate, characterized by elemental analysis, IR, (13)C NMR and TG, and applied for lead, copper and cadmium removal. Based on sulfur elemental analysis an amount of 2.66 mmol g(-1) of pendant chain was incorporated in the original biopolymer, as also demonstrated through the appearance of a signal at 201 ppm in the (13)C NMR in the solid state. The TG curve demonstrated that the final product is more stable than the precursor chitosan. The sorption capacity of modified biopolymer was determined through a batchwise methodology, with maximum capacities of 2.24: 1.14 and 0.84 mmol g(-1) for divalent lead, copper and cadmium from aqueous solution, respectively. The highest sorption capacity for lead reflects the soft cation/sulfur interaction. The experimental data were adjusted to the Langmuir, the Freundlich and the Temkin sorption isotherm models using both linear and nonlinear regression analysis. (C) 2011 Elsevier B.V. All rights reserved.
dc.description87
dc.description1
dc.description88
dc.description95
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationColloids And Surfaces B-biointerfaces
dc.relationColloid Surf. B-Biointerfaces
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectBiopolymer
dc.subjectDithiocarbamate
dc.subjectSorption
dc.subjectToxic metals
dc.subjectIsotherms
dc.subjectMetal-ions
dc.subjectThermodynamic Data
dc.subjectAqueous-solutions
dc.subjectCarboxymethyl-chitosan
dc.subjectHeavy-metals
dc.subjectCu(ii) Ions
dc.subjectWaste-water
dc.subjectRemoval
dc.subjectAdsorption
dc.subjectSorption
dc.titleDithiocarbamated chitosan as a potent biopolymer for toxic cation remediation
dc.typeArtículos de revistas


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