离子液体内耦合液膜迁移苯酚的研究  

A Study on the Transport of Phenol in the System of Inner-coupled Liquid Membrane with Ionic Liquid

作　　者：姚秉华[1] 张三学[1] 郭攀峰[1] 王宝娟[1] 

机构地区：[1]西安理工大学理学院应用化学系,西安710048

出　　处：《分析科学学报》2008年第4期394-398,共5页Journal of Analytical Science

基　　金：西安市科技攻关项目(No.GG05074);陕西省教育厅科学研究基金(No.06JK215)

摘　　要：本文以N-甲基咪唑为原料,采用微波合成法,制备了疏水性离子液体1-丁基-3-甲基咪唑六氟磷酸盐([BMIM]PF6),并将其作为液膜,对苯酚的内耦合液膜迁移进行了研究,考察了温度、搅拌速度、料液相酸度、初始浓度及解析相NaOH浓度等因素对苯酚迁移的影响,得出了最佳迁移条件:温度300 K,搅拌速度350 r/min,料液相pH为3.65,解析相NaOH浓度为0.8 mol/L。在最佳液膜条件下,对于10 mg/L苯酚溶液,迁移110 min,迁移率可以达到97.3%,膜相中有少量苯酚滞留。离子液体可循环使用。Hydrophobic ionic liquid 1-butyl-3-methylimidazoliu hexafluorophosphate [BMIM] PF6 was synthesized by microwave method, which was used as a carrier, and the transport of phenol was studied in the system of inner-coupled liquid membrane. The effects of temperature, stirring speed, acidity in feed solution, initial concentration of phenol and concentration of NaOH in strip phase on the transport of phenol were invesigated respectively. The best conditions were obtained with temperature of 300 K, stirring speed of 350 r/min, pH of 3.65 in the feed and NaOH concentration in strip phase of 0.8 mol/ L, respectively. Under the opitmum conditions, the transport rate of phenol could be obtained to be 97.3% for a 110 min transportation, and a small amount of phenol retention was found in the membrane phase for phenol concentration of 10 mg/L. The ionic liquid cauld be used circularly.

关 键 词：离子液体 液膜 膜分离 苯酚 废水处理 

分 类 号：O658[理学—分析化学]