Fouling mitigation in the repeated batch runs of electrodialysis with humate foulant |
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Authors: | Hong-Joo?Lee Email author" target="_blank">Seung-Hyeon?MoonEmail author |
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Affiliation: | (1) Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, 500-712 Gwangju, Korea |
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Abstract: | Since membrane fouling is one of the important considerations in electrodialysis, many approaches have been considered in
order to minimize fouling of the process. In this study, square wave powers having pulsing effects were employed to investigate
the effects of the frequencies on the fouling mitigation during fouling experiments of humate, forming a loosely packed fouling
layer on the anion exchange membrane surface. It was shown that a pulsing electric field with determined optimal frequency
reduced the fouling potential of an already fouled system in repeated batch runs at a significant level. It was suggested
through electrodialysis experiments of humate that the pulsation of the electric field affected the electromigration of the
charged particles deposited in the fouling layer, thus decreasing fouling potentials. |
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Keywords: | Electrodialysis Humate Fouling Fouling Mitigation Pulsing Electric Field |
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