Effect of the presence of lead on the biosorption of copper, cadmium and zinc by activated sludge

被引:47
作者
Hammaini, A [1 ]
Ballester, A [1 ]
Blázquez, ML [1 ]
González, F [1 ]
Muñoz, JS [1 ]
机构
[1] Univ Complutense, Dept Ciencia Mat & Ingn Met, Fac Ciencias Quim, Madrid, Spain
关键词
biosorption; activated sludge; lead; copper; cadmium; zinc; wastewater treatment; biomass;
D O I
10.1016/S0304-386X(02)00157-3
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The effect of the presence of Pb on the biosorption efficiency of Cu, Cd and Zn by activated sludge was investigated. To evaluate the two-metal sorption system efficiency, simple isotherm curves had to be replaced by three-dimensional sorption isotherm surfaces. In order to describe the isotherm surfaces mathematically, three Langmuir-type models were evaluated. The isotherms indicated a competitive uptake of the different metals with Pb that was preferentially adsorbed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:109 / 116
页数:8
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