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Preparation of high flux polyamide reverse osmosis membrane

Authors： LIN Ze, YUE Xinye, PAN Qiaoming*

Units： The Development Center of Water Treatment Technology, Hangzhou, 310012

KeyWords： polyamide; reverse osmosis membrane; interfacial polymerization; high flux; high rejection; DMI

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(3):79-85

Abstract：

A polyamide reverse osmosis composite membrane with high flux was prepared via interfacial polymerization on the polysulphone ultrafiltration membrane. The influence of 1,3-dimethyl-2-imidazoline ketone (DMI) on the structure and performance of polyamide reverse osmosis membrane was studied. The surface morphology of polyamide reverse osmosis membrane was characterized by SEM and AFM, and the structure of membrane was analyzed by ATR-FTIR, the hydrophilic was evaluated by the contact angle meter. The separation performance of the membrane, water flux and salt rejection, were evaluated under operating pressure of 145 Psi using 500 ppm sodium chloride solution. The results indicated that DMI could effectively control the surface morphology of polyamide reverse osmosis membrane, to dramatically enhance the water flux of membrane without decrease the salt rejection.

Funds：

工信部新材料产业化专项项目；浙江省海水淡化技术研究重点实验室项目（2012E10001）；膜法海水淡化关键技术及装备产业化（20132111A01）；国家海洋公益项目（201405009-4）

AuthorIntro：

第一作者信息：林泽（1991-），男，浙江杭州，学士，从事膜材料研究，E-mail：linzenb@163.com，电话：18768196011 通讯作者信息：潘巧明（1974- ），男，教授级高工，E-mail：qiaomingpan@163.com

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