不同结构离子液体对含Pb^(2+)废水萃取性能的对比研究

Comparison of Extraction Performance of Different Ionic Liquids for Pb^(2+) from Wastewater

通过比较3种不同结构的离子液体对含铅废水的萃取性能,探讨了萃取时间、温度、铅离子初始浓度、水相与有机相的体积比等对萃取过程的影响,结果表明,烯基取代的[AMIM][PF6]离子液体对含铅废水中铅离子的去除效果最好,同时,离子液体通过回收可再次利用,实现离子液体的绿色化。

The extraction performances of three different kinds of ionic liquids for Pb2＋ from wastewater were compared, and effects of extraction time, temperature, initial concentration of Pb2＋, phase ratio on extraction were discussed. Results showed that the ionic liquid within allyl, namely [AMIM][PF6], had the highest extractability of Pb2＋ from wastewater, and the ionic liquids could be recovered and reused, realizing the greening of ionic liquids.