支撑离子液膜体系中Ni(Ⅱ)的传输  

Transport of Ni(Ⅱ)in Supported Liquid Membrane System of Ionic Liquid

作　　者：余晓皎[1] 吕伟桃[1] 王娜[1] 姚秉华[1] 孟瑞军[1] 李新明[1] 

机构地区：[1]西安理工大学理学院,陕西西安710048

出　　处：《西安理工大学学报》2010年第3期341-344,共4页Journal of Xi'an University of Technology

基　　金：陕西省教育厅自然科学基金资助项目(09JK674);西安理工大学博士启动基金资助项目(108-210803);陕西省科学技术研发资助项目(2008K08-09)

摘　　要：研究了以聚偏氟乙烯膜为支撑体,2-乙基己基膦酸-单-2-乙基己基酯为载体,疏水性离子液体1-丁基-3-甲基咪唑六氟磷酸盐为膜溶剂的支撑液膜体系中Ni(Ⅱ)的传输;考察了影响Ni(Ⅱ)传输的各种因素,并对该体系富集、传输Ni(Ⅱ)的最佳条件进行了讨论。结果表明,当料液相pH值为5.50～6.00,膜相载体浓度为6.50%～7.50%,反萃相H2SO4浓度为3.0 mol/L,迁移时间为150 min时,Ni(Ⅱ)的迁移率可达90%以上。The transferring behavior of Ni （Ⅱ ） ion through supported liquid membrane system is studied with porous polyvinylidene fluoride membrane as supported body, 2-ethylhexly phosphonic acid-mono-2- ethylhexylester as carriers and hydrophobic ionic liquid 1-butyl-3- hexafluorophosphate methylimidazole as membrane solvent. The effects of various factor upon Ni （Ⅱ ） transport rate are investigated. The best conditions of transport of Ni （ Ⅱ） are discussed. The results indicate that when pH in feed liquid phase is 5.50 - 6.00, the concentrations of membrane phase carrier is 6.50% - 7.50% , the concentration of H2SO4 in stripping phase is 3.0mol/L, and the transport time is 150 min, Ni（ Ⅱ ）transport rate can reach over 90%.

关 键 词：支撑液膜 离子液体 2-乙基己基膦酸-单-2-乙基己基酯 镍(Ⅱ) 

分 类 号：TQ028.8[化学工程]