Aplicação da casca de arroz na adsorção dos íons Cu2+, Al3+, Ni2+ e Zn2+

Química Nova

Aparecida Maria Simões Mimura¹  Taciana Valéria De Almeida Vieira¹  Patrícia Benedini Martelli¹  Honória De Fátima Gorgulho¹ 

[1] ,Universidade Federal de São João del Rei Departamento de Ciências Naturais São João del Rei MG ,Brasil

关键词: rice husk;    biosorption;    metals adsorption;   

DOI  :  10.1590/S0100-40422010000600012

来源: SciELO

【 摘 要 】

The potential use of rice husk as biosorbent to remove Cu2+, Al3+, Ni2+ and Zn2+ ions from aqueous solutions was investigated under both noncompetitive and competitive conditions. The biosorbent was used in the form of particles with size smaller than 0.5 μm and in the concentration of 500 mg L-1 (dry weight). The experiments were performed using batch adsorption technique for concentrations of 10, 30 and 70 mg L-1 of metal ions at pH 4.0 and 5.0. The chemical speciation of metals in the experimental conditions used in this work was predicted by the software Visual MINTEQ 2.6.

【 授权许可】

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