纳滤初期邻苯二甲酸二(2-乙基己基)酯在膜上的吸附行为  

Adsorption of di-2-ethylhexyle phthalate onto nanofiltration membranes at filtering initial phase

作　　者：程爱华[1,2] 王磊[2] 王旭东[2] 

机构地区：[1]西安科技大学地质与环境学院,西安710054 [2]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《膜科学与技术》2012年第4期44-49,共6页Membrane Science and Technology

基　　金：国家自然科学基金项目(51008243);国家水体污染控制与治理科技重大专项(2009ZX07212-002-005);陕西省教育厅专项基金资助项目(09JK543);陕西省教育厅重点实验室基金资助项目(11JS057)

摘　　要：研究了NF90膜和NF70膜对纯水、模拟水和河水中邻苯二甲酸二(2-乙基己基)酯(DEHP)的截留和吸附.结果表明:NF90膜能实现对微量DEHP(浓度为100μg/L)的有效去除,截留率高达95%以上;纳滤初始阶段,DEHP在膜面的吸附作用较强,吸附率达40%左右.操作压力,pH,共存有机物、无机物和膜孔径影响DEHP在膜上的吸附,初始浓度的影响不大.The adsorption and retention of di-2-ethylhexyle phthalate（DEHP） in different water matrices （Milli-Q water, simulated water and river water） were examined using two types of nanofiltration membranes （NF90 and NF70）. The results showed that DEHP at a concentration of 100 /~g/L could be effectively removed by the NF90, and the retention was more than 95%, and the adsorption was about 40% at filtering initial phase. Adsorption of DEHP on membranes was related to operation pressure, pH, coexisting organic and inorganic compounds, and membrane pore size. But no significant effect of DEHP concentration was observed.

关 键 词：邻苯二甲酸二(2-乙基己基)酯(DEHP) 纳滤膜 吸附 截留 

分 类 号：TQ028[化学工程]