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《Guangdong Chemical Industry》 2010-02
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Study on Adsorption of Cu~(2+)、Zn~(2+)、Cd~(2+) with Activated Sludge

Xie Lixiang1,Hu Kewei2(1.China Machinery International Engineering Design & Research Institute,Hunan 410007;2.Department of Environmental Science and Engineering,Xiangtan University,Xiangtan 411105,China)  
The adsorption of Cu2+,Zn2+,Cd2+ with activated sludge was studied.The effects of pH,reaction time,Sludge dosage and temperature were investigated.Also the adsorption properties of activated sludge towards Cu2+,Zn2+,Cd2+ was evaluated and fitted.The results showed that activated sludge exhibited potential for Cu2+,Zn2+,Cd2+ adsorption.Under the optimal conditions,the removal rate reached 94.3 %,70.5 % and 81 % respectivly.Adsorption isotherms of these three heavy metals corresponded well with the Langmuir equations and the adsorption capacity of activated sludge towards these three heavy metals was Cu2+ Cd2+ Zn2+.
【CateGory Index】: X703
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