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

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

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...

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Veröffentlicht in:Journal of environmental sciences (China) 2006, Vol.18 (5), p.840-844
1. Verfasser: WANG Xue-jiang XIA Si-qing CHEN Ling ZHAO Jian-fu CHOVELON Jean-marc NICOLE Jaffrezic-renault
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吸附作用
生物吸着
金属化合物
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creator WANG Xue-jiang XIA Si-qing CHEN Ling ZHAO Jian-fu CHOVELON Jean-marc NICOLE Jaffrezic-renault
description 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 equilibrium 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.
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source Alma/SFX Local Collection
subjects 吸附作用
生物吸着
金属化合物
title Biosorption of cadmium（Ⅱ） and lead（Ⅱ） ions from aqueous solutions onto dried activated sludge
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