以聚醚砜(PES)为原料,采用相转化法制得PES纳滤膜,考察PES纳滤膜对硒酸钠的分离性能,并测定膜的水接触角、表面电动电位(Zeta电位)。结果表明,PES纳滤膜的水接触角为54.8°,Zeta电位为-64.8mV;在PES纳滤膜厚度为150m,致孔剂为PVP K30,溶剂挥发时间为5s条件下,对硒酸钠的截留率和通量分别达到79.6%和86.4kg/(m2·h),具有较好的去除效果。
The nanofiltration membrane was prepared by phase inversion method,polyethersulfone (PES) was used as raw material.The separation performance of sodium selenite by PES was investigated.The water contact angle and surface electrokinetic potential (Zeta potential) of the membrane were measured.The results showed that the water contact angle of PES was 54.8°.Zeta potential of PES was -64.8mV.Used PES with thickness of 150μm,the porogen was PVP K30,and the solvent evaporation time was 5s,the rejection and flux of sodium selenite were 79.6% and 86.4kg/(m2·h),respectively.PES nanofiltration membrane had good effect on removing sodium selenate in water.
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基金资助
哈尔滨市应用技术研究与开发项目(2016RAQXJ011)
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