中文摘要：

采用自制等离子体改性聚砜荷电膜对表面活性剂十二烷基苯磺酸钠（SDBS）进行截留测试,通过改变溶液的初始SDBS质量浓度（40～400 mg.L-1）、操作压力（0.15～0.35 MPa）,离子强度（NaCl质量浓度100～300 mg.L-1）以及pH（2～12）等影响因素,观察荷电膜对SDBS溶液的截留率以及通量的变化,分析作用机理。结果表明,静电斥力为主要作用力,同时伴有机械筛分作用。初始SDBS含量低时比高时截留效果好,SDBS初始质量浓度为40 mg.L-1时截留率可达85.68%;低离子强度时静电斥力发挥主要作用,截留率比高离子强度时高;压力越大,截留率越高;溶液pH接近中性时截留效果最好。

英文摘要：

Surfactant sodium dodecyl benzene sulfonate solution was retained by the plasma modified polysulfone charged membrane.The rejection tests were at different factors including solution concentration,operating pressure（0.15~0.35 MPa）,ionic strength（concentration of NaCl 100~300 mg·L-1） and pH（2~12）.The retention rate and flux of SDBS solution retained by charged membrane were observed.The mechanism of retention was analyzed.Experimental results revealed that electrostatic repulsion was the main force in the process.And size exclusion also existed.Solutions possessing low concentration showed better rejection effect than those having high concentration.When initial feed concentration was 40 mg·L-1,the retention rate could reach 85.68%.Electrostatic repulsion played an important role at low ionic strength.The retention rate at low ionic strength was higher than those at high ionic strength.The retention rate increased as the operating pressure presented high.And the rejection performed well when pH was close to neutral.