活性炭对乙黄药的吸附研究  

Study on Adsorption of Ethyl Xanthate by Activated Carbon

作　　者：曹俊雅[1] 张文茜 张婧[1] 刘猛 CAO Junya;ZHANG Wenxi;ZHANG Jing;LIU Meng(School of Chemical&Environmental Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《水处理技术》2023年第6期52-58,共7页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(41977029);中央高校基本科研业务费专项基金资助(2021YJSHH33)。

摘　　要：乙黄药是有色金属浮选常用的捕收剂,工业上常采用吸附法处理选矿废水中残留的乙黄药。文章以市售木质活性炭AC为吸附剂,研究其对乙黄药的吸附特性。通过元素分析、SEM、FT-IR、BET等方法对其进行表征,结果表明AC比表面积为1856.85 m^(2)/g,平均孔径为3.38 nm。单因素吸附实验发现AC用量为0.1 g,对100 mL初始浓度为100 mg/L的乙黄药,1 h去除率为97.21%;吸附过程更符合准二级动力学和Freundlich模型。AC循环再生4次后,对乙黄药去除率仍达82.82%,再生性能良好。Ethyl xanthate is a commonly used collector for the flotation of non-ferrous metals.The adsorption method was often used to treat the residual ethyl xanthate in mineral processing wastewater in the industry.In this paper,the adsorption characteristics of commercially available AC(activated carbon)were used as adsorbents to study the adsorption characteristics of ethyl xanthate.It was characterized by elemental analysis,SEM,FT-IR,BET,zero charge point determination,and other methods.The results showed that the specific surface area of AC was 1856.85 m^(2)/g,and the average pore diameter was 3.38 nm.Univariate experiments found that the AC dosage was 0.1 g,and the removal rate of 1 hour was 97.21%for 100 mL of xanthate with an initial concentration of 100 mg/L.The equilibrium and kinetic data were best modeled by the Freundlich isotherm and the quasi-secondary kinetics model,respectively.After recycling 4 times,the removal rate of xanthate still reached 82.82%,and the regeneration performance was satisfactory.

关 键 词：吸附 活性炭 乙黄药 水处理 

分 类 号：TQ424[化学工程]