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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/79327

    Title: 通入氣泡對掃流微過濾中粒子附著與過濾通量之影響
    Other Titles: Effects of air-sparging on particle deposition and filtration flux in cross-flow microfiltration
    Authors: 黃國楨;Hwang, K .J.;吳効峰;Wu, S .F.
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: 掃流微過濾;通氣;多相流;粒徑分佈;Cross-flow microfiltration;air-sparging;multiple phase flow;wide size distribution range
    Date: 2008-09
    Issue Date: 2012-12-03 22:06:17 (UTC+8)
    Publisher: 臺北市:行政院國家科學委員會
    Abstract: 本研究在掃流微過港、中通入氣體,探討液體速
    剪切力迅速增加的結果,會造成粒徑5μm 以上的粒子
    著機率與濾餅性質。The effects of liquid velocities, gas velocities
    and filtration pressures on the filtration flux, particle
    deposition probability, cake properties and shear stress on
    the membrane surface in air-sparging cross-flow
    microfiltration are studied. The flow pattern plays an
    important role on the filtration performance. The shear
    stress on the membrane surface can efficiently reduce the
    cake mass and enhance filtration rates under bubble flow;
    however, the specific filtration resistance of cake will
    markedly increase, which results in a lower filtration rate
    than non-sparging gas condition, under a slug flow. It is
    because the rapid increase in the shear stress on the
    membrane surface leads the stability of larger particles to
    decrease in a slug flow and also leads more small particles
    to pack in the void in cake. The cake layer is compressed
    more seriously due to the gas-flow, this make the specific
    filtration resistance of cake to be significantly increased.
    According to the force analysis, the probability of particle
    deposition on the membrane surface can be understood.
    Therefore, the cake mass, the particle size distribution in
    cake can be also estimated.
    Relation: 2008年輸送現象及其應用研討會論文摘要集 ( 2008 Symposium of transport phenomena and applications abstract book)
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Proceeding

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