Abstract：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-orderkinetic model. This kind of adsorbent can be repeatedly used for at least 3 times, and the wastewater after processing can meet the national classⅠdischarge standard. This research can provide reference for the treatment of copper-containing complex wastewater from electroplating industry.
谢雪珍, 胡杨玲, 叶有明, 曾军. MPTS改性高岭土吸附剂的制备及其吸附性能研究[J]. 矿冶工程, 2024, 44(1): 105-110.
XIE Xuezhen, HU Yangling, YE Youming, ZENG Jun. Preparation of MPTS-Modified Kaolin Adsorbent and Its Adsorption Properties. Mining and Metallurgical Engineering, 2024, 44(1): 105-110.
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2024, Vol. 44 
