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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/22236

    標題: Pervaporation Separation of Water/Ethanol Mixture Using Asymmetric Ion-Exchange Membranes Containing Aluminum Ions
    作者: Shih-Hsiung Chen
    Rey-May Liou
    Chi-Yu Shih
    Cheng-Lee Lai
    Juin-Yih Lai
    貢獻者: 環境工程與科學系
    關鍵字: asymmetric
    ion exchange
    日期: 2007-07
    上傳時間: 2010-01-15 11:18:03 (UTC+8)
    摘要: The asymmetric aluminum ion exchange polysulfone membranes have successfully been prepared for the dehydration of ethanol-water mixture. The relationship between the membrane morphology, separation performance, and the ion content of membranes were discussed in this study. The experimental results showed that the separation performance of those membranes was increased upon increasing the degree of aluminum ion exchange in polysulfone membranes. Both permeation rate and separation factors of those membranes increased with increasing the degree of ion exchange. The increase in separation performance of aluminum ion exchange membranes was mainly attributed to ion crosslinking in polymer network and the hydration effects of exchanged ion in membranes. On the other hand, the operating temperature in the PV process showed a significant influence on the dehydration of water molecules in the permeate. An increase in temperature increased the permeation flux of permeate but slightly decreased its selectivity. The aluminum asymmetric ions in membranes showed a strong influence on permselectivity of asymmetric ion exchange membranes.
    關聯: Journal of Applied Polymer Science 106(2): p.1412-1420
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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