【作者】 魏珊珊； 纪军； 赵只增； 吴移海； 刘惠； 王力；

【Author】 WEI Shanshan;JI Jun;ZHAO Zhizeng;WU Yihai;LIU Hui;WANG Li;College of Safety and Environmental Engineering,Shandong University of Science and Technology;Library of Qingdao University;Civic Service Center of Zhucheng City;

【机构】 山东科技大学安全与环境工程学院； 青岛大学图书馆； 诸城市市民服务中心；

【摘要】 本文采用十六烷基三甲氧基硅烷对海泡石矿物进行疏水改性,考察了疏水改性海泡石对Cu²⁺的吸附性能。采用SEM、FTIR、XRD以及光学接触角测量仪研究了海泡石改性前后的结构特征,结果表明海泡石经酸处理、疏水化改性后比表面积增大,表面性能得到改善,对废水中重金属离子显示出较好的物理-化学吸附性能。进一步探究了吸附时间、初始浓度、吸附剂投加量以及pH对水体中Cu²⁺去除效果的影响,研究表明改性海泡石对Cu²⁺的吸附去除效率可达97%以上,吸附过程以化学吸附为主,符合准二级动力学模型。更多还原

【Abstract】 In this paper,sepiolite was hydrophobically modified by HDTMS,and its adsorption performance for Cu²⁺ was investigated.The structure characteristics of sepiolite before and after modification were studied by SEM,FTIR,XRD and optical contact angle measurement instrument.The results showed that the specific surface area of sepiolite increased after acid treatment and hydrophobic modification,and the surface performance was improved.It also showed good physical-chemical adsorption performance for heavy metal ions in wastewater.The effects of adsorption time,initial concentration,adsorbent dosage and pH on the removal efficiency of Cu²⁺ in water were further explored.The study showed that the removal efficiency of Modified Sepiolite for Cu²⁺ was more than97%,and and the adsorption process was dominated by chemical adsorption,which conforms to the quasi-secondorder kinetic model.更多还原