Proceedings of the Membrane Society of Korea Conference (한국막학회:학술대회논문집)
- 2004.05a
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- Pages.170-174
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- 2004
Syntheses of chlorine resistant reverse osmosis membranes
- Kim, Nowon (Department of Environmental Engineering, Dongeui Univ.) ;
- Lee, Yong-Taek (College of Environment and Applied Chemistry, Kyunghee Univ.)
- Published : 2004.05.01
Abstract
Most of thin film composite reverse osmosis membranes include amide linkages, which are susceptible to chlorine attack resulting in N-chloro derivatives. This study examined a new method based on post-treatment of reverse osmosis membrane with various silane derivatives to improve chlorine resistance. The silane derivatives contain one alkyl group and three alkoxy groups such as trifluoromethyltrimethoxysilane, 3-aminopropylmethoxydiethoxysilane and 3, 3, 3-trifluoropropyltrimethoxysilane. Compared to commercial membranes, silane derivatives coated membranes showed significantly enhanced chlorine durability.
Keywords