Use este identificador para citar ou linkar para este item:
http://www.repositorio.ufop.br/jspui/handle/123456789/3908
Título: | Adsorption of chromium (VI) ion from aqueous solution by succinylated mercerized cellulose functionalized with quaternary ammonium groups. |
Autor(es): | Gurgel, Leandro Vinícius Alves Melo, Júlio César Perin de Lena, Jorge Carvalho de Gil, Laurent Frédéric |
Palavras-chave: | Modified cellulose Triethylenetetramine Anion exchange Chromium Kinetics |
Data do documento: | 2009 |
Referência: | GURGEL, L. V. A. et al. Adsorption of chromium (VI) ion from aqueous solution by succinylated mercerized cellulose functionalized with quaternary ammonium groups. Bioresource Technology, v. 100, p. 3214-3220, 2009. Disponível em: <http://www.sciencedirect.com/science/article/pii/S096085240900159X>. Acesso em: 30 de set. 2014. |
Resumo: | Succinylated mercerized cellulose (cell 1) was used to synthesize an anion exchange resin. Cell 1, containing carboxylic acid groups was reacted with triethylenetetramine to introduce amine functionality to this material to obtain cell 2. Cell 2 was reacted with methyl-iodide to quaternize the amine groups from this material to obtain cell 3. Cells 2 and 3 were characterized by mass percent gain, degree of amination and quaternization, FTIR and CHN. Cells 2 and 3 showed degrees of amination and quaternization of 2.8 and 0.9 mmol/g and nitrogen content of 6.07% and 2.13%, respectively. Cell 3 was used for Cr (VI) adsorption studies. Adsorption equilibrium time and optimum pH for Cr (VI) adsorption were found to be 300 min and 3.1, respectively. The Langmuir isotherm was used to model adsorption equilibrium data. The adsorption capacity of cell 3 was found to be 0.829 mmol/g. Kinetic studies showed that the rate of adsorption of Cr (VI) on cell 3 obeyed a pseudo-second-order kinetic model. |
URI: | http://www.repositorio.ufop.br/handle/123456789/3908 |
DOI: | https://doi.org/10.1016/j.biortech.2009.01.068 |
ISSN: | 0960-8524 |
Licença: | O periódico Bioresource Technology concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3480320490026. |
Aparece nas coleções: | DEGEO - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
ARTIGO_AdsorptionChromiumAqueous.pdf | 502,62 kB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.