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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44256

    Title: A study on cross-flow ultrafiltration with various membrane orientations
    Authors: Cheng, Tung-Wen;Lin, Chih-Ta
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Cellulose;Esters;Flow of fluids;Membranes;Purification;Ultrafiltration;Cellulose ester membranes;Cross-flow velocity;Flow rates;Separation;crossflow;membrane;separation;ultrafiltration
    Date: 2004-10
    Issue Date: 2013-08-08 14:50:19 (UTC+8)
    Publisher: Kidlington: Pergamon
    Abstract: In this study, the flux behavior of an-inclined flat-membrane cross-flow ultrafiltration was investigated. The experiment was conducted using a cellulose ester membrane (10,000 MWCO) and dextran T500 as the test solution. The membrane inclination included 0° (flow above membrane), 90° (vertical membrane), and 180° (flow below membrane). Experimental results showed that raising the cross-flow velocity increased the permeate flux and the time required to reach a steady state was also shortened. The effect of inclination on the flux enhancement is significant when the conventional ultrafiltration is operated at a low liquid flow rate. In two-phase flow ultrafiltration, the introduction of gas enhances the permeate flux even at a high liquid flow rate and the influence of gas sparging is particularly prominent as the membrane is installed at 180° orientation. Under the present operating conditions, the filtration flux is maximum at 180° and minimum at 0° inclination.
    Relation: Separation and Purification Technology 39(1-2 SPEC. ISS.), pp.13-22
    DOI: 10.1016/j.seppur.2003.12.008
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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