In order to process copper complex wastewater from electroplating industry,a kind of kaolin was modified by using a modifier of 3-mercaptopropyl trimethoxysilane(MPTS)to be as an adsorbent,and its adsorption of E330-Cu was then studied.It is found that kaolin shall be properly modified at 50 ℃ for 6 hours with the modifier MPTS at an amount of 0.04 mL/g,which is then adopted as an adsorbent for E330-Cu.After 35 min-adsorption at 35 ℃,with E330-Cu at an initial concentration of 5 mg/L,adsorbent at an amount of 15 g/L,and pH value of 4.5,the final adsorption rate can reach 92.50％.It is shown that the adsorption process follows Langmuir isothermal adsorption model and quasi-second-order kinetic model.This kind of adsorbent can be repeatedly used for at least 3 times,and the wastewater after processing can meet the national class Ⅰ discharge standard.This research can provide reference for the treatment of copper-containing complex wastewater from electroplating industry.
维普
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