利用3种单皮层聚醚酰亚胺(PEI)中空纤维超滤膜,对水溶液中重金属离子镉和铅脱除进行了胶束强化超滤研究.在胶束强化超滤(MEUF)过程中,测定了流速、操作压力、表面活性剂(十二烷基硫酸钠和十二烷基苯磺酸钠)与浓度对重金属离子分离性能的影响,结果表明镉和铅的截留率可达99.0%以上,渗透通量可达1.83×10-10 m3/(m2*s*Pa).同时,对聚电解质(羧甲基纤维素钠和聚丙烯酸钠)在MEUF中的应用也进行了研究,镉和铅的截留率可达99.5%以上,渗透通量可达1.89×10-10 m3/(m2*s*Pa).根据以上研究,说明MEUF可应用于处理工业污水中.
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