淡江大學機構典藏:Item 987654321/44176
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/44176


    Title: Filtration characteristics of the rejected-solute layer in dead-end ultrafiltration
    Authors: 鄭東文;Cheng, Tung-wen;Huang, Cheng-yang
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Ultrafiltration;Membrane inclination;Porosity;Specific resistance
    Date: 2002-11-01
    Issue Date: 2010-03-09 10:00:43 (UTC+8)
    Publisher: Elsevier
    Abstract: The characteristics of the rejected-solute layer of ultrafiltration were investigated in a dead-end experimental apparatus with sudden reduction of filtration area. The aqueous solution of dextran T70 and T500 were ultrafiltrated in the flat membrane module with various inclination angles. The operating parameters of experiments included the inclination angles of the membrane, transmembrane pressures, compositions of solution and the membrane cut-off. Based on the conventional cake filtration theory, the filtration characteristics (the porosity and specific resistance of the rejected-solute layer) can be obtained from the flux data. Experimental results indicates that porosity of the gel-cake layer decreases while the specific resistance increases with the increase in the transmembrane pressure. The mixture solution has a larger specific resistance than a single-solute solution. The filtration under 90° inclination has a larger porosity than that under 0 or 180° inclination, and the operation under 0° inclination has a larger specific resistance of the gel-cake. Using a large molecular weight cut-off (MWCO) membrane will form a more compact gel-cake than that using a small MWCO one.
    Relation: Journal of membrane science 209(2), pp.485-492
    DOI: 10.1016/S0376-7388(02)00366-6
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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