Zeta-Potential of Fouled Thin Film Composite Membrane
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概要
- 論文の詳細を見る
The surface zeta-potential of a cross-linked polyamide thin film composite reverse osmosis membrane was measured using an electrophoresis method. It was confirmed that this method could be effectively applied to analyze the fouling of such membranes.It is known that the water flux of membranes drastically decreases as a result of fouling by surfactants. Although the surfactants adsorbed on reverse osmosis membranes could not be detected by conventional methods such as SEM, EDX and FT-IR, their presence could be clarified by the profile measurements of the surface zeta-potential. The profiles of the membrane surface zeta-potentials changed to more positive values in the measured pH range as a result of fouling by cationic or amphoteric surfactants. This measuring method of surface zeta-potentials allowed us to analyze a very small amount of fouling of a thin film composite reverse osmosis membrane.This method could be used to analyze the fouled surface of the thin film composite reverse osmosis membrane which is used for production of ultrapure water and shows a remarkable decrease in flux. It also became clear that this method is easy and effective for the reverse osmosis membrane surface analysis of adsorbed materials such as surfactants.
- 社団法人 化学工学会の論文
著者
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KIMURA Shoji
Department of Pharmacology, Kagawa University Medical School
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UEYAMA KOREKAZU
Department of Chemical Science and Engineering, Osaka University
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Kimura Shoji
Department Of Agricultural Chemistry Faculty Of Agriculture Utsunomiya University
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Kimura Shoji
Department Of Environ Chemical Engineering Kogakuin University
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IKEDA Kenichi
Nitto Denko Corp.
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HACHISUKA Hisao
Nitto Denko Corp.
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NAKAMURA Toshitaka
Nitto Denko Corp.
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Ueyama Korekazu
Department Of Chemical Engineering Faculty Of Engineering Science Osaka University
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Ueyama Korekazu
Department Of Chemical Engineering Osaka University
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