巯基改性聚砜螯合性亲和膜的制备及其除汞研究  

Preparation of thiohydroxy modified polysulfone chelating affinity membrane chromatogram and its removal properties for Hg^(2+)

作　　者：王兵[1] 姜锡朋[1] 肖锋[1] 黄垒[1] 

机构地区：[1]天津工业大学材料科学与化学工程学院,天津300160

出　　处：《天津工业大学学报》2004年第4期1-5,共5页Journal of Tiangong University

基　　金：中国博士后科学基金 (2 0 0 3 0 3 43 1 4);天津市高等学校科技发展基金项目 (2 0 0 3 0 40 9)

摘　　要：通过探讨共混比例、巯基螯合树脂颗粒粒径及铸膜液温度对膜结构的影响,确定了最佳制膜工艺,用相转换法制备出对Hg2+具有大螯合容量的非均相螯合性亲和膜,研究了巯基螯合树脂颗粒粒径、盐溶液pH值和盐溶液浓度对膜螯合吸附量的影响,发现膜对Hg2+的最大吸附量可达450μg/cm2,吸附行为满足Fre undlich吸附等温式.对膜进行动态螯合吸附测试表明,该膜对Hg2+可实现吸附与解吸同步进行.The chelate resin D190/PSF different phase chelate membranes with high chelate capacity for Hg^(2+) were prepared. Various process parameters affecting the properties of the chelate membrane, such as the blending ratio, chelate resin grain size and temperatures of casting solution are widely studied. The relationship among the chelate amount, pH and the concentrations of the metallic ion solution are examined. Under appropriate conditions, the chelate filter membrane has a capacity of 450 μg/cm^2 for Hg^(2+). Sorption isotherm can be expressed by the Freundlich sorption model. The dynamic experiment indicated that the sorption and desorption can be realized simultaneously.

关 键 词：螯合树脂 聚砜 螯合滤膜 吸附 解吸 

分 类 号：TQ342.86[化学工程—化纤工业] TS102.54[轻工技术与工程—纺织工程]