화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.76, 344-354, August, 2019
DOI10.1016/j.jiec.2019.03.059  Export Citation
Improved fouling resistance for RO membranes by a surface modification method
Hee Min Park, Jin Yoo1, and Yong Taek Lee†
  • Department of Chemical Engineering, College of Engineering Kyung Hee University, Gyeonggi-do 446-701, Republic of Korea
  • 1Tech Center, Chemicals R&D Center, Samyang Corporation, Daedeok-daero 730, Yuseong-gu, 34055 Daejeon, Republic of Korea
E-mail:
We investigated the surface modification of reverse osmosis (RO) membranes to enhance fouling resistance. RO membranes were modified via a sol?gel process using aminopropyltrimethoxysilane (APTMS), chlorotrimethoxysilane (CTMS) and mercaptopropyltrimethoxysilane (MPTMS). The fouling test showed that the flux of the pristine decreased continuously from 52.3 to 20 GFD, whereas APTMS-RO, CTMS-RO and MPTMS-RO were maintained about 37, 25, and 13 GFD, respectively. Salt rejection was maintained over 97.4%. The FRR values of pristine, APTMS-RO, CTMS-RO, and MPTMS-RO were 75.5, 98, 92.2, 88.3%, after chemical cleaning process. As a result, the modified RO membranes have excellent antifouling properties after 3-cycles chemical cleaning.
Keywords:Polyamide;Reverse osmosis membrane;Surface modification;Silane coupling agents;Fouling resistance
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