螯合剂和表面活性剂在脱盐过程中对膜分离性能的影响

Influence of chelant and surfactant on separation properties of membranes in desalination

选择聚砜膜、醋酸纤维素膜和聚乙烯醇复合膜对单组分盐溶液和分别加入了螯合剂、表面活性剂及两者共存时的混合溶液进行分离实验研究 ,对比了 3种膜对不同溶液的截盐性能和透水速度 ,分析了螯合剂EDTA、表面活性剂SDBS以及两者共存条件下对 3种不同膜分离性能的影响 .

Polysulfone membrane, cellulose acetate membrane and polyvinyl alcohol composite membrane are selected to perform separation experiments of single aqueous solution of salt and mixed solution of it with chelant, surfactant or both of them. The effects of chelant, surfactant and both of them on desalination ratio and permeation flux of three kinds of membranes are investigated.