SOLVENT TRANSPORT ACROSS ANION-EXCHANGE MEMBRANES UNDER A TEMPERATURE DIFFERENCE AND AN OSMOTIC-PRESSURE DIFFERENCE

被引：21

作者：

TASAKA, M

URATA, T

KIYONO, R

AKI, Y

机构：

[1] Department of Chemistry and Material Engineering, Faculty of Engineering, Shinshu University, Nagano, 380, Wakasato

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 67卷 / 01期

关键词：

ELECTROCHEMISTRY; ION-EXCHANGE MEMBRANES; OSMOSIS; THERMODYNAMICS; THERMOOSMOSIS;

D O I：

10.1016/0376-7388(92)87042-V

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Solvent transport across anion-exchange membranes was measured for water and aqueous KCl, KF, KIO3, KClO3, HCOONa, CH3COOK, C2H5COONa, C6H5COONa, C6H5SO3Na solutions under a temperature difference and an osmotic pressure difference. Anion-exchange membranes Neosepta(R) AFN and modified porous AFN (P) were used. The porous membrane AFN (P) was prepared by treating Neosepta(R) AFN with NaOH solution. Plots of the volume flux against the temperature difference between the solutions on both sides give straight lines starting from zero. The direction of thermoosmosis was from the cold side to the hot side. Solvent transport across anion-exchange membranes under a temperature difference and an osmotic pressure difference is proportional to the water content of the membranes that is represented by the weight of absorbed water per one gram of dry membrane matrix without counterions, and is almost independent of the counterion species.

引用

页码：83 / 91

页数：9

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