English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51296/86412 (59%)
造訪人次 : 8174975      線上人數 : 84
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/98566


    題名: Comparisons of Membrane Fouling and Separation Efficiency in Protein/Polysaccharide Cross-Flow Microfiltration using Membranes with Different Morphologies
    作者: Hwang, Kuo-Jen;Y.C. Chiang
    貢獻者: 淡江大學化學工程與材料工程學系
    關鍵詞: Microfiltration;Membrane fouling;Cross-flow filtration;Membrane filtration;Bio-separation
    日期: 2014-04-07
    上傳時間: 2014-08-14 10:09:07 (UTC+8)
    出版者: Kidlington: Pergamon Press
    摘要: The membrane fouling and filtration performance of Bovine serum albumin (BSA)/dextran cross-flow microfiltration using membranes with different morphologies are analyzed and compared. Three 0.1 μm hydrophilic membranes made of mixed cellulose ester (MCE), polyvinylidene fluoride (PVDF) and polycarbonate (PC) were used in these experiments. The MCE and PVDF membranes had sponge-like structures, while the PC membrane had uniform straight-through circular pores. The membrane morphology, cross-flow velocity and transmembrane pressure effects on the filtration flux; membrane fouling and solute transmissions are discussed. The filtration flux increases with increasing cross-flow velocity or transmembrane pressure. The PVDF membrane produced the highest filtration flux, while the MCE membrane exhibited the lowest. A 15–30% difference in filtration flux may be obtained due to different membrane selection. Comparing various filtration resistances, the cake resistances of PVDF and PC membranes are almost the same but much higher than that for the MCE membrane, especially under high pressure. The membrane blocking resistance sequence is MCE > PVDF > PC membrane. The membrane blocking resistance of MCE and PVDF were quite similar due to their sponge network structures. Membrane fouling was analyzed using SEM and CSLM. BSA aggregates deposited onto the membrane surfaces, while dextran molecules adsorbed on the membrane surface and the membrane pore walls. More BSA/dextran mixtures were observed on the PVDF membrane. The PC membrane fouling was due mainly to pore coverage. Dextran molecules were more likely to deposit onto PVDF and MCE membranes. Both BSA and dextran transmission decreased with increasing cross-flow velocity. Increases in transmembrane pressure lead to lower BSA but higher dextran transmission. The PVDF membrane exhibited the highest solute transmission, while the PC membrane resulted in the lowest. All membranes exhibited higher selectivity for the BSA/dextran mixture under higher pressures, especially the PC membrane.
    關聯: Separation and Purification Technology 125, pp.74-82
    DOI: 10.1016/j.seppur.2014.01.041
    顯示於類別:[化學工程與材料工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML117檢視/開啟
    index.html0KbHTML137檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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