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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received May 3, 2002
Accepted August 14, 2002
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Flux Enhancement with Glass Ball Inserted Membrane Module for the Ultrafiltration of Dextran Solution

Membrane Technology Laboratory, Korea Institute of Science and Technology, Seoul 130-650, Korea
jjkim@kist.re.kr
Korean Journal of Chemical Engineering, January 2003, 20(1), 99-103(5), 10.1007/BF02697192
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Abstract

The glass-ball-inserted membrane module has been designed to enhance the filtration of a flat-sheet membrane. Three different modes of filtration experiments were conducted and compared to demonstrate the flux enhancement due to the presence of glass balls: normal dead-end filtration, vortex flow filtration, and enhanced vortex flow filtration using glass balls. In the case of enhanced vortex flow filtration, the permeate flux was found to be three times as large as that of dead-end filtration and two times larger than vortex flow filtration. In addition, the flux decline was observed to be relatively low. The effect of the amount of glass balls on the permeate flux was also investigated by changing the glass ball volume fraction from 0.059 to 0.356. It has been observed that the permeate flux shows a maximum value of the volume fraction of 0.119. For the glass-ball-inserted membrane module, the permeate flux tends to increase with the feed flow rate.

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