Role of Foulant-Membrane Interactions in Organic Fouling of RO Membranes with Respect to Membrane Properties
- Role of Foulant-Membrane Interactions in Organic Fouling of RO Membranes with Respect to Membrane Properties
- 양주희; 이상엽; 유영범; 국지훈; 홍승관; 이승윤; 민경석
- adhesion force; Atomic Force Microscopy; membrane surface property; organic fouling; RO membrane
- Issue Date
- SEPARATION SCIENCE AND TECHNOLOGY
- VOL 45, NO 7, 948-955
- Initial fouling behavior due to membrane-foulant interactions was
investigated by atomic force microscopy for various reverse osmosis
membranes with different surface properties. Carboxylate modified
latex and unmodified latex particles were used as surrogates of
organic foulants. The results showed that the membrane-foulant
adhesion forces were mainly governed by membrane surface properties
such as hydrophobicity and surface charge. Stronger adhesion
forces were determined for the membranes with more hydrophobic
and less surface charge. Fouling experiments were further carried
out to correlate the adhesion force data to actual flux-decline curves.
A remarkable correlation was obtained where the membranes with
stronger adhesion force more suffered from flux decline.
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