Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
J Hazard Mater. 2011 Sep 15;192(3):1283-90. doi: 10.1016/j.jhazmat.2011.06.037. Epub 2011 Jul 12.
This work evaluates the performance of ionic liquid in supported liquid membrane (SLM) for the removal of phenol from wastewater. Ionic liquids are organic salts entirely composed of organic cations and either organic or inorganic anions. Due to the fact that the vapor pressure of ionic liquid is not detectable and they are sparingly soluble in most conventional solvents, they can be applied in SLM as the organic phase. In this work, 1-n-alkyl-3-methylimidazolium salts, C(n)MIMX have been investigated so as to determine an optimal supported ionic liquid membrane. The effect of operational parameters such as pH, stirring speed and the concentration of stripping agent has been studied, and an evaluation of different membrane supports were also carried out. With a minimal amount of the ionic liquid 1-Butyl-3-methylimidazolium hydrogensulfate, 85% phenol removal could be achieved by using polytetrafluoroethylene hydrophobic membrane filter in the SLM.
这项工作评估了离子液体在支撑液膜（SLM）中用于从废水中去除苯酚的性能。离子液体是完全由有机阳离子和有机或无机阴离子组成的有机盐。由于离子液体的蒸气压不可检测，并且它们在大多数常规溶剂中的溶解度较低，因此它们可以作为有机相应用于 SLM。在这项工作中，研究了 1-正烷基-3-甲基咪唑鎓盐 C(n)MIM [X]（-），以确定最佳的支撑离子液体膜。研究了操作参数如 pH 值、搅拌速度和萃取剂浓度的影响，并对不同的膜支撑体进行了评估。在 SLM 中使用聚四氟乙烯疏水膜过滤器，只需少量的 1-丁基-3-甲基咪唑硫酸氢盐，即可实现 85%的苯酚去除率。
