蒙脱石对乙基钾黄药-铅复合污染体系的吸附平衡与动力学

dsorption equilibrium and kinetics of potassium ethyl xanthate-lead combined pollutants to montmorillonite by static adsorption experiments were investigate to reveal environmental behavior of xanthate and heavy metals under a combined pollution system. The results showed that adsorption of potassium ethyl xanthate on montmorillonite was slight. Adsorption of Pb2+ to montmorillonite was seriously affected in the presence of potassium ethyl xanthate owing to a suspended product of the reaction between Pb2+ and potassium ethyl xanthate, adsorption rate constant increasing from 10.40 to 54.76 gomg-1omin-1,while equilibrium adsorption capacity ( ) decreasing from 9.80 to 4.27mgog-1.The impact degree improved with the increase of potassium ethyl xanthate concentration, whereas reduced with the increase of Pb2+ concentration, pH value, and montmorillonite dosage. The findings may serve as an important reference for the control of xanthate and heavy metals combined pollution.