WATER AND ETHANOL SORPTION PHENOMENA ON STARCH

被引：42

作者：

LEE, JY ^{[1
]}

WESTGATE, PJ ^{[1
]}

LADISCH, MR ^{[1
]}

机构：

[1] PURDUE UNIV,RENEWABLE RESOURCES ENGN LAB,W LAFAYETTE,IN 47907

来源：

AICHE JOURNAL | 1991年 / 37卷 / 08期

关键词：

D O I：

10.1002/aic.690370808

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The sorption behavior of water and ethanol on starch material has been investigated in relation to the adsorptive separation of water from ethanol. The adsorption isotherms of water-starch, ethanol-starch and water-ethanol-starch were measured using a Cahn electrobalance. Careful examination of the many sorption isotherm models resulted in selection of Sircar's model and the potential theory to best represent the isotherm data of water-starch and ethanol-starch adsorption. Experimental results showed that ethanol as well as water can absorb on starch. The adsorption rate of ethanol, however, is much slower than that of water. This suggests that the selective removal of water from ethanol vapor in a packed-bed absorber is likely a rate-dependent, not an equilibrium-dependent, process.

引用

页码：1187 / 1195

页数：9

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