PERMEATION RATES IN THE PERVAPORATION OF WATER-ETHANOL MIXTURES USING NAFION MEMBRANE

被引：2
|
作者：
ASAI, H
KATO, S
NAGAHAMA, K
机构：
[1] Dept. of Ind. Chem., Tokyo Metropolitan Univ.
来源：
KAGAKU KOGAKU RONBUNSHU | 1990年 / 16卷 / 01期
关键词：
Bulk Flow; Nafion Membrane; Permeation Rate; Pervaporation; Sorption-Diffusion Model; Water-Ethanol Mixture;
D O I：
10.1252/kakoronbunshu.16.69
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Sorption-diffusion model was used to study permeation rates of water and ethanol using Nafion membrane. The ratio of bulk flow to permeation flux was quite large when the permeation flux of a key permeate was much lower than that of the other permeate, which means that bulk flows are not always negligible. Diffusion equations were expressed with the concentration gradient of the key permeate alone, and a concentration-dependent diffusion coefficient which includes a parameter was used. The one-parameter equation excellently correlated measured permeation rates. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.
引用
收藏
页码：69 / 75
页数：7
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