Application of a new bifunctionalized chitosan derivative with zwitterionic characteristics for the adsorption of Cu2+, Co2+, Ni2+, and oxyanions of Cr6+ from aqueous solutions: kinetic and equilibrium aspects

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dc.creatorFrancine Tatiane Rezende de Almeida
dc.creatorBruno Christiano Silva Ferreira
dc.creatorAna Luísa da Silva Lage Moreira
dc.creatorRossimiriam Pereira de Freitas
dc.creatorLaurent Frédéric Gil
dc.creatorLeandro Vinícius Alves Gurgel
dc.date.accessioned2024-01-31T14:38:22Z
dc.date.accessioned2025-09-09T01:11:41Z
dc.date.available2024-01-31T14:38:22Z
dc.date.issued2016
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1016/j.jcis.2015.12.037
dc.identifier.issn0021-9797
dc.identifier.urihttps://hdl.handle.net/1843/63547
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Colloid and Interface Science
dc.rightsAcesso Restrito
dc.subjectQuitosana
dc.subjectAdsorção
dc.subjectCromo
dc.subjectNíquel
dc.subjectCobalto
dc.subjectCobre
dc.subjectCinética química
dc.subjectQuímica orgânica
dc.subjectFísico-química orgânica
dc.subject.otherBifunctionalized chitosan
dc.subject.otherAdsorption
dc.subject.otherCopper
dc.subject.otherCobalt
dc.subject.otherNickel
dc.subject.otherChromium
dc.subject.otherDesorption
dc.titleApplication of a new bifunctionalized chitosan derivative with zwitterionic characteristics for the adsorption of Cu2+, Co2+, Ni2+, and oxyanions of Cr6+ from aqueous solutions: kinetic and equilibrium aspects
dc.typeArtigo de periódico
local.citation.epage309
local.citation.spage297
local.citation.volume466
local.description.resumoThis study describes the synthesis of a new chitosan derivative (C2) with zwitterionic characteristics and its use for the removal of cationic species Cu2+, Co2+, and Ni2+ and anionic species of Cr6+ in a single aqueous solution. The new adsorbent was synthesized by quaternization of the amine group of chitosan and esterification of hydroxyl groups with EDTA dianhydride. These combined reactions gave both cationic and anionic characteristics to C2 with the release of quaternary ammonium groups and carboxylic groups. The capacity of C2 to adsorb Cu2+, Co2+, Ni2+, and oxyanions of Cr6+ was evaluated in a batch process with different contact times, pH values, and initial concentrations. Adsorption isotherms were best fitted to the Langmuir and Sips models. The maximum adsorption capacities (Qmax) of C2 for adsorption of Cu2+, Co2+, Ni2+, and Cr6+ were 0.698, 1.125, 0.725, and 1.910 mmol/g, respectively. The ΔadsG° values were in the range from −20 to −28 kJ/mol. These values suggest a mixed mechanism controlling adsorption. Desorption studies using an aqueous solution consisting of 0.1 mol/L HNO3 were carried out. The reusability of the recovered C2 adsorbent after desorption was also evaluated.
local.identifier.orcidhttps://orcid.org/0000-0003-1119-6822
local.identifier.orcidhttps://orcid.org/0000-0001-6974-3724
local.identifier.orcidhttps://orcid.org/0000-0001-9509-3235
local.identifier.orcidhttps://orcid.org/0000-0001-5249-8670
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0021979715304215

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