Bifunctionalized chitosan : a versatile adsorbent for removal of Cu(II) and Cr(VI) from aqueous solution.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMoreira, Ana Luísa da Silva Lage-
Autor(es): dc.creatorPereira, Analice de Souza-
Autor(es): dc.creatorSpeziali, Marcelo Gomes-
Autor(es): dc.creatorNovack, Kátia Monteiro-
Autor(es): dc.creatorGurgel, Leandro Vinícius Alves-
Autor(es): dc.creatorGil, Laurent Frédéric-
Data de aceite: dc.date.accessioned2025-08-21T15:20:26Z-
Data de disponibilização: dc.date.available2025-08-21T15:20:26Z-
Data de envio: dc.date.issued2019-05-06-
Data de envio: dc.date.issued2019-05-06-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/11207-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0144861718309536-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.carbpol.2018.08.055-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1011078-
Descrição: dc.descriptionThis study describes the chemical modification of chitosan to produce a novel bifunctionalized adsorbent material (C4) for the removal of Cu2+ and oxyanions of Cr6+ from a single aqueous solution. The chemical modifications allowed C4 to be insoluble under acidic conditions, improving the chemical properties of the modified chitosan in aqueous solution. C4 adsorbent was synthesized by reaction of the amino group of chitosan with 2-pyridinecarboxaldehyde, a reduction of imine group, followed by esterification with EDTA dianhydride (EDTAD). C4 was characterized by solid-state 13C nuclear magnetic resonance, infrared spectroscopy, and elemental analysis. The adsorption studies of Cu2+ and oxyanions of Cr6+ in a batch mode were evaluated as a function of the contact time (kinetics), solution pH, and initial metal ion concentration. The maximum adsorption capacities (Qmax) of C4 for the adsorption of Cu2+ (pH 5.5) and Cr6+ (pH 2.0) were 2.60 and 3.50 mmol/g, respectively. The reusability of the recovered C4 adsorbent was also evaluated.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectAdsorption-
Palavras-chave: dc.subjectDesorption-
Palavras-chave: dc.subjectCopper-
Palavras-chave: dc.subjectChromium-
Título: dc.titleBifunctionalized chitosan : a versatile adsorbent for removal of Cu(II) and Cr(VI) from aqueous solution.-
Aparece nas coleções:Repositório Institucional - UFOP

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