Pervaporation separation of water/ethanol mixture using asymmetric ion-exchange membranes containing aluminum ions

被引：0
|
作者：
Chen, Shih-Hsiung [1 ]
Liou, Rey-May [1 ]
Shih, Chi-Yu [2 ]
Lai, Cheng-Lee [1 ]
Lai, Juin-Yih [3 ]
机构：
[1] Department of Environmental Engineering and Science, Chia-Nan University of Pharmacy and Science, Tainan 717, Taiwan
[2] Department of Chemical Engineering, Cheng Shiu University, Kaohsiung 83305, Taiwan
[3] Research and Development Center for Membrane Technology, Chung Yuan University, Chung Li 320, Taiwan
来源：
Journal of Applied Polymer Science | 2007年 / 106卷 / 02期
关键词：
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. © 2007 Wiley Periodicals; Inc;
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页码：1412 / 1420
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