In situ modification of polyamide reverse osmosis membrane module for improved fouling resistance 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers
年/卷/期
2019 / 141 /
页码
402-412
ISSN号
0263-8762
作者单位
Zhejiang Sci Tech Univ, Sch Civil Engn & Architecture, Hangzhou 310018, Zhejiang, Peoples R China;Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China;Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China;Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China;Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Zhejiang, Peoples R China;SOA, Dev Ctr Water Treatment Technol, Hangzhou 310012, Zhejiang, Peoples R China;
作者
Liu, Meihong;Yu, Chuang;Wu, Yiyang;Lu, Zhenhua;Yu, Sanchuan;Gao, Congjie;
摘要
In situ improvement of fouling resistance of the state-of-the-art polyamide reverse osmosis membrane module on the basis of the fouling characteristic of the fluid to be treated is of great practical significance. In this work, in situ modification was performed with the spiral wound polyamide reverse osmosis membrane module for improved fouling resistance to specific foulant. Small molecular monomers of amidosulfonic acid (ASA), diethanolamine (DEA) and piperazine (PIP) were grafted onto the surface of the flat-sheet polyamide-based thin-film composite membrane within the module separately through 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC)-activated amidation of carboxyl groups. The results of fouling experiments indicated that the fouling resistance of the polyamide reverse osmosis membrane module to the model foulants of bovine serum protein (BSA), sodium alginate (SA) and dodecyl trimethyl ammonium bromide (DTAB) could be effectively improved through grafting monomers ASA, IDEA and PIP, respectively, showing significant reduction in declines of membrane flux to aqueous BSA, SA and DTAB solutions by 47.2%, 41.3% and 34.4%. The changes of membrane surface hydrophilicity and negative charge were in charge of the improved antifouling property. The in-situ modification was also found to slightly enhance membrane salt rejection and have nearly no influence on membrane water flux. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机翻摘要
暂无翻译结果,您可以尝试点击头部的翻译按钮。
关键词/主题词
Reverse osmosis;Polyamide reverse osmosis membrane module;In situ modification;Antifouling property;Surface grafting;
若您需要申请原文,请登录。

最新评论

暂无评论。

登录后可以发表评论

相关标签
相关文章
意见反馈
返回顶部