English  |  正體中文  |  简体中文  |  Items with full text/Total items : 58323/91876 (63%)
Visitors : 14067272      Online Users : 83
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44140

    Title: Effects of Operating Conditions on the Performance of Cross-Flow Filtration of Viscoelastic Slurry
    Authors: 黃國楨;Hwang, Kuo-jen;Kao, Chien-kuo
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Cross-Flow Filtration;Cake Properties;Viscoelastic Fluid;Particle Deposition;Non-Newtonian Fluid;Filtration
    Date: 2001-01-01
    Issue Date: 2010-03-09 09:56:30 (UTC+8)
    Publisher: Japan : Society of Chemical Engineering
    Abstract: The effects of operating conditions, such as rheology of fluid, cross-flow velocity, and filtration pressure, on the cake formation and the performance of cross-flow filtration of viscoelastic slurry are studied. The viscoelastic fluid is prepared by adding a polymer, sodium polyacrylate, into de-ionized water. The results show that the viscoelastic behavior of polymeric fluid plays an important role on the performance of filtration, which results in a more compact cake but a higher filtration rate as the polymer concentration in slurry increases. Although the elastic effect of fluid increases the difficulty of filtration, and cause the filtration rate to decay quickly at the beginning of filtration, the cake mass decreases with increasing the polymer concentration due to the increase of drag force exerted on particles in the cross-flow direction. An increase in filtration pressure or a decrease in cross-flow velocity causes the filtration rate to increase. The parameter of elastic effect, E, decreases continuously during a filtration and becomes a negligible value when the filtration rate is lower than a certain value. The value of E increases with decreasing filtration pressure for a given filtration rate. The average cake porosity decreases with filtration time from the start of filtration due to the elastic effect and then increases and approaches gradually to a constant when this effect diminished. The cake porosity at pseudo-steady state decreases with increasing polymer concentration, increasing filtration pressure, and decreasing cross-flow velocity. Furthermore, the probability of particle deposition and the size distribution of particles in filter cake under various conditions are measured. The phenomenon of “selective deposition of particles” can be observed, and the size distribution of particles in the cake decreases with decreasing filtration rate or increasing polymer concentration.
    Relation: Journal of Chemical Engineering of Japan 34(12), pp.1516-1523
    DOI: 10.1252/jcej.34.1516
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

    Files in This Item:

    File SizeFormat

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback