氯化银-聚醚砜复合膜制备及吸附去除水中Br-研究  

Preparation of AgCl/PES Composite Membrane and Its Adsorption Removal for Br-from Aqueous Solution

作　　者：管若伶 王海增[1] GUAN Ruoling;WANG Haizeng(Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,山东青岛266100

出　　处：《水处理技术》2018年第5期22-26,共5页Technology of Water Treatment

摘　　要：通过共混法将自制高纯度氯化银颗粒与聚醚砜成型制备复合膜材料,利用各类表征手段(BET、SEM、XRD和机械性能测试)对膜材料的结构进行分析研究。采用静态吸附方法,探讨了氯化银含量、吸附时间、吸附温度、溶液初始p H等因素对Br-吸附去除的影响。结果表明,复合膜去除Br-的优化条件为:m(Ag Cl)/m(PES)为0.50,吸附时间7 h,吸附温度25℃,溶液初始p H为7。Langmuir线性等温模型和准2级动力学模型能更好的描述Br-在Ag Cl-PES复合膜上的去除过程,m(Ag Cl)/m(PES)为0.50的Ag Cl-PES复合膜的理论最大吸附量为71.42 mg/g。The composite membrane was prepared by self-made high purity silver chloride particles and polyether sulfone through blending method. The structure of membrane material was analyzed by various characterization methods, such as BET, SEM, XRD and mechanical property test. The effect of silver chloride content, adsorption time, adsorption temperature and initial pH on Br-removal was researched by static adsorption method. The results showed that, The optimum removal effect was achieved using the following conditions： m（AgCl）/m（PES）, adsorption time, adsorption temperature and initial pH was 0.50, 7 h, 25 ℃ and 7 respectively. Langmuir linear isotherm model and pseudo second-order kinetic model could better describe the removal process of bromine ion by AgCl/PES composite membrane. The theoretical maximum adsorption capacity of the AgCl/PES composite membrane is 71.42 mg/g when m（AgCl）/m（PES） was 0.5.

关 键 词：氯化银 溴离子 聚醚砜复合膜 吸附 去除 

分 类 号：TQ028.8[化学工程]