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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/21682


    標題: Embedded nano-iron polysulfone membrane for dehydration of the ethanol/water mixtures by pervaporation
    作者: Shih-Hsiung Chen
    Rey-May Liou
    Cheng-Lee Lai
    Mu-Ya Hung
    Mei-Hui Tsai
    Shih-Liang Huang
    貢獻者: 環境工程與科學系
    關鍵字: Nano-iron
    Polysulfone
    Pervaporation
    In-situ thermal decomposition
    日期: 2008-12
    上傳時間: 2009-10-05 14:12:57 (UTC+8)
    摘要: Embedded nano-iron polysulfone membranes were prepared for dehydration of ethanol/water mixtures by pervaporation. It was found that the nano-iron particle can be prepared by in-situ thermal decomposition method in casting solution. The verification of the nano-particle dispersion in membrane was made by TEM measurement. It was found that the embedding nano-particle slightly increased the flux with the ordering polymer chains arrangement in membrane and also increased the separation factor. A remarkable enhancement in the separation factor of over 1000 can also be found in embedded membranes. But the flux of embedded membranes are lower (less than 350 g/m2-h) than the flux of non-embedded polysulfone membranes (500 g/m2-h). The increase in the separation factor of embedding membranes mainly contributed by the ordering/packing of polymer chains was caused by the surface effect of nano particle and limited the permeate diffusion behavior. On the other hand, it was found that the nano-particle embedding in the membrane showed a significant effect on the sorption behavior and presented a significant interaction between water and the embedded membrane. In this study, the high performance dehydration membranes were successfully prepared with nano-particle embedding in polysulfone membranes.
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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