Removal of Ca(II) and Mg(II) from aqueous single metal solutions by mercerized cellulose and mercerized sugarcane bagasse grafted with EDTA dianhydride (EDTAD).

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorKarnitz Júnior, Osvaldo-
Autor(es): dc.creatorGurgel, Leandro Vinícius Alves-
Autor(es): dc.creatorGil, Laurent Frédéric-
Data de aceite: dc.date.accessioned2019-11-06T13:33:36Z-
Data de disponibilização: dc.date.available2019-11-06T13:33:36Z-
Data de envio: dc.date.issued2015-04-13-
Data de envio: dc.date.issued2015-04-13-
Data de envio: dc.date.issued2010-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/5029-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/558086-
Descrição: dc.descriptionIn a previous work, chemically modified cellulose (EMC) and sugarcane bagasse (EMMB) were prepared from mercerized cellulose (MC) and twice-mercerized sugarcane bagasse (MMB) using ethylenediaminetetraacetic dianhydride (EDTAD) as modifying agent. In this work we described in detail the modification of these materials in function of reaction time and EDTAD amount in the reaction media. The resistance of ester bond at pH 1, 2, 11, and 12 was also evaluated by FTIR. The results were used to model the hydrolysis process and a kinetic model was proposed. The modified materials (EMMB and EMC) were used to adsorb Ca2+ and Mg2+ ions from aqueous single solutions. The adsorption isotherms were developed at two pH values. These materials showed maximum adsorption capacities for Ca2+ and Mg2+ ions ranging from 15.6 to 54.1 mg/g and 13.5 to 42.6 mg/g, respectively. The modified material from sugarcane bagasse (EMMB) showed larger maximum adsorption capacities than modified material from cellulose (EMC) for both metals.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico Carbohydrate Polymers concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3581981052974.-
Palavras-chave: dc.subjectAdsorption-
Palavras-chave: dc.subjectMercerization-
Palavras-chave: dc.subjectModified sugarcane bagasse-
Palavras-chave: dc.subjectEthylenediaminetetraacetic dianhydride-
Palavras-chave: dc.subjectHardness water-
Título: dc.titleRemoval of Ca(II) and Mg(II) from aqueous single metal solutions by mercerized cellulose and mercerized sugarcane bagasse grafted with EDTA dianhydride (EDTAD).-
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