低压膜集成技术回收纺丝废水中的离子液体  

Ionic liquid in the spinning waste water was recycled using membrane integration under low-pressure

作　　者：田恩玲[1] 王薇[1,2] 杜启云[1,2] 

机构地区：[1]天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地,天津300160 [2]天津膜天膜工程技术有限公司,天津300160

出　　处：《化工新型材料》2012年第6期148-150,共3页New Chemical Materials

基　　金：天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地开放基金(201021)

摘　　要：1-丁基-3-甲基咪唑氯盐([Bmim]Cl)是纤维素的良溶剂,能否实现从纺丝废水中有效地回收一直是一个亟待解决的问题,本文考察了聚酰胺类膜对[Bmim]Cl离子液体的抗腐蚀性,比较了自制中空纤维纳滤膜(NF)及商业反渗透平板膜(RO)对不同盐类的截留效果,研究了[Bmim]Cl的浓度、测试温度、压力等对RO膜截留性能的影响。FTIR表明,RO膜可实现对离子液体的浓缩,纯度非常高,浓缩倍率达到8.2,回收率为97.8%。1-butyl-3-methyl imidazolium chloride（[Bmim]C1）is good solvent of cellulose;it has been a serious prob- lem that the recovery of ionic liquid from spinning wastewater. The resistance of ionic liquid on polyamide membrane was investigated;the rejection effect on different salts by self-made hollow fiber nanafiltration membrane and commercial reverse osmosis flat membrane wasalso compared; different expetimental conditions were studied on rejection performance of re- verse osmosis membrane, such as pressure, ionic liquid concentration and temperature. FTIR showed the concentration of ionic liquid and very high purity can be realized by RO membrane. The concentration ratio reached 20. 06 and the recovety as highly as 97.89%.

关 键 词：反渗透膜 离子液体 纺丝废水 

分 类 号：X783.4[环境科学与工程—环境工程]