Utilization of rice husk to remove Cu2+, Al3+, Ni2+ and Zn2+ from wastewater

Quimica nova

Mimura, Aparecida Maria Simões¹  Martelli, Patrícia Benedini¹  Gorgulho, Honória de Fátima¹  Vieira, Taciana Valéria de Almeida¹ 

[1] Universidade Federal de São João del Rei, São João del Rei, Brasil

关键词: rice husk;    biosorption;    metals adsorption.;   

DOI  :  10.1590/S0100-40422010000600012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The potential useof rice husk as biosorbent to remove Cu2+, Al3+, Ni2+and Zn2+ ions from aqueous solutions was investigated under bothnoncompetitive and competitive conditions. The biosorbent was used in the formof particles with size smaller than 0.5 μmand in the concentration of 500 mg L-1 (dry weight). The experimentswere performed using batch adsorption technique for concentrations of 10, 30and 70 mg L-1 of metal ions at pH 4.0 and 5.0. The chemicalspeciation of metals in the experimental conditions used in this work was predictedby the software Visual MINTEQ 2.6.

【 授权许可】

CC BY