Biosorption of cadmium(II) and lead(II) ions from aqueous solutions onto dried activated sludge

被引：0

作者：

CHOVELON Jeanmarc ^{[1
]}

NICOLE Jaffrezicrenault ^{[2
]}

机构：

[1] Application of Chemistry and Environment Laboratory, UMR CNRS , University Claude Bernard Lyon , Boulevard du Novemvre , Villeurbanne Cedex , France

[2] CEGELY, UMR/CNRS , Central University of Lyon, Ecully Cedex, France

来源：

Journal of Environmental Sciences | 2006年 / 05期

关键词：

biosorption; adsorption isotherm; cadmium; lead; activated sludge;

D O I：

暂无

中图分类号：

X703 [废水的处理与利用];

学科分类号：

083002 ;

摘要：

The removal of heavy-metal ions from aqueous solutions by using dried activated sludge has been investigated in batch systems. Effect of solution pH, initial metal ion concentration, and temperature were determined. The results of the kinetic studies showed that the uptake processes of the two metal ions(Cd(II) and Pb(II)) followed the pseudo-second-order rate expression. The equi- librium data fitted very well to both the Langmuir and Freundlich adsorption models. The FT-IR analysis showed that the main mechanism of Cd(II) and Pb(II) biosorption onto dried activated sludge was their binding with amide I group.

引用

页码：840 / 844

页数：5