English  |  正體中文  |  简体中文  |  Items with full text/Total items : 52047/87178 (60%)
Visitors : 8681590      Online Users : 93
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/987654321/34780

    Title: 進料成分與薄膜性質對平板掃流超過濾之影響
    Other Titles: Effects of feed component and membrane property on cross-flow ultrafiltration in flat-sheet module
    Authors: 周欣霈;Chou, Hsin-pei
    Contributors: 淡江大學化學工程與材料工程學系碩士班
    鄭東文;Cheng, Tung-wen
    Keywords: 掃流超過濾;薄膜性質;蛋白質;Cross-flow Ultrafiltration;Membrane Property;Protein
    Date: 2008
    Issue Date: 2010-01-11 05:36:11 (UTC+8)
    Abstract: 以平板掃流式超過濾系統,探討不同溶質(BSA、Dextran T70、β-cyclodextrin) 溶液於不同親疏水性薄膜(PES膜、RCA膜),及在不同操作參數(液體速度、pH值、透膜壓差)下,濾速、阻隔率、過濾阻力以及雙溶質溶液分離效率之變化。
    In this study, polymer membranes were employed in a cross-flow ultrafiltration system to investigate the effects of solution compositions and membrane properties on filtration. The solution fluxes, solute rejections and filtration resistances were discussed under various operating parameters such as liquid velocity, pH value and transmembrane pressure.
    Experimental results indicate that the difference in the hydrophobicity between the feed solution and membrane generates an exclusion force to retard the formation of fouling layer on the membrane surface. Such as the case of filtration of BSA solution by the RCA membrane, a high permeate flux is achieved due to the low fouling propensity. When the pH value is far away the BSA isoelectric point, the porosity of BSA deposited layer is high due to exclusion between the BSA molecules and results in high flux. In the binary solutes system, cause by the internal fouling of β-cyclodextrin, the flux of solution containing β-cyclodextrin is lower than that of pure BSA solution. On the other, BSA molecules have strong fouling propensity to PES membrane, the transmission of β-cyclodextrin is lowered due to the compact BSA deposited layer and becomes lower as the applied pressure increases that will reduce the separation selectivity.
    Appears in Collections:[化學工程與材料工程學系暨研究所] 學位論文

    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