Cassava root husks as a sorbent material for the uptake and pre-concentration of cadmium(II) from aqueous media


Autoria(s): Jorgetto, Alexandre de Oliveira; Silva, Adrielli Cristina Peres da; Cavecci, Bruna; Barbosa, Rodrigo Correa; Martines, Marco Antonio Utrera; Castro, Gustavo Rocha de
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

02/03/2016

02/03/2016

2013

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Processo FAPESP: 2011/14944-5

Cassava husks were undergone to simple processes to obtain a fine powder whose particle diameter varied from 63 μm to 75 μm. The characterization of the material indicated the presence of the groups alcohol, amine and thiocarbonyl. The material was tested through batch experiments and the effect of the contact time and pH over the adsorption of Cd(II) ions were evaluated. The material presented a rapid kinetic equilibrium, which was reached in less than 1 min, and the highest Cd(II) uptake occurred at pH 5. The optimum conditions obtained were applied to determine the material’s maximum adsorption capacity with the aid of the linearized Langmuir equation (0.109 mmol g-1). A pre-concentration experiment was also carried out, and provided a pre-concentration factor of 43-fold.

Formato

206-212

Identificador

http://www.orbital.ufms.br/index.php/Chemistry/article/view/490

Orbital: the Electronic Journal of Chemistry, v. 5, n. 3, p. 206-212, 2013.

1984-6428

http://hdl.handle.net/11449/135109

ISSN1984-6428-2013-05-03-206-212.pdf

0278054122091940

Idioma(s)

eng

Relação

Orbital: the Electronic Journal of Chemistry

Direitos

openAccess

Palavras-Chave #Cassava #Cadmium #Adsorption #Pre-concentration #Solid-phase extraction
Tipo

info:eu-repo/semantics/article