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《Industrial Safety and Environmental Protection》 2007-06
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Study on the Removal Ability of Cd~(2+) in Aqueous Solution by Marble

ZHOU Xiao-juan YANG Zhu CHENG Hui-lin CHEN Hua-qing(College of Environment,China University of Geosciences Wuhan 430074)  
The removal of Cd2+ in aqueous solution is investigated by using marble in this paper.We find that marble can remove Cd2+ from aqueous solution effectively.The main influence parameters in this experiment are solution pH,contact time,initial cadmium concentration and marble addition.In the condition of pH=8,marble addition=12.5 g/L,contact time=30 mins and Cd2+ initial concentration=50 mg/L,the removal rate of cadmium is 92%,the cadmiumadsorption capacity is 3.68 mg/g.Typical adsorption isotherms are calculated,and the Langmuir type is best.
【CateGory Index】: X132
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