Development of a highly hydrophilic nanofiltration membrane for desalination and water treatment

被引：57

作者：

Ahmad, A. L. ^{[1
]}

Ooi, B. S. ^{[1
]}

Mohammad, A. Wahab ^{[2
]}

Choudhury, J. P. ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia

[2] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Bangi 43600, Selangor, Malaysia

来源：

DESALINATION | 2004年 / 168卷

关键词：

Nanofiltration; Hydrophilic; Carboxyl group; Desalination;

D O I：

10.1016/j.desal.2004.07.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Thin film composite (TFC) co-polyamide membranes were modified by adding carboxyl group to the polypiperazinamide backbone. The sodium chloride, sodium sulphate, magnesium chloride and magnesium sulphate rejections were measured at various feed pressures for the modified and unmodified membranes. The pure water permeability was improved as much as 20% for the modified membrane. Besides, the membrane rejection ability towards divalent ions was excellent compared to the monovalent ions. The rejection of multivalent ions was more than 96% at the operating pressure as low as 450 kPa. The modified membrane was more negatively charged compared to the unmodified membrane. The membranes developed can be used for pre-treatment in a desalination plant as well as for hardness removal in water treatment process at a higher production rate.

引用

页码：215 / 221

页数：7

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