THE STABILITY OF SUPPORTED LIQUID MEMBRANES

被引：47

作者：

NEPLENBROEK, AM

BARGEMAN, D

SMOLDERS, CA

机构：

[1] University of Twente, Department of Chemical Engineering, 7500 AE Enschede

来源：

DESALINATION | 1990年 / 79卷 / 2-3期

关键词：

D O I：

10.1016/0011-9164(90)85013-Z

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this paper a new hypothesis about the instability mechanism of SLMs will be discussed: emulsion formation induced by lateral shear forces. Experimental results show that a water phase with a low salt concentration which flows along the membrane interface causes the removal of both solvent and carrier from the membrane. There is a significant correlation between the instability of the liquid membrane and the stability of emulsions formed with the same system. Therefore, the development of stable SLMs needs conditions in which formation of relatively stable emulsions is prevented. This can be realized by gelation of the liquid membrane. A gel network was created in the pores of the membrane in such a way that the permeability is not decreased while the stability increases to values which are very promising.

引用

页码：303 / 312

页数：10

共 3 条

[1] LIFETIME OF SUPPORTED LIQUID MEMBRANES - THE INFLUENCE OF INTERFACIAL PROPERTIES, CHEMICAL-COMPOSITION AND WATER TRANSPORT ON THE LONG-TERM STABILITY OF THE MEMBRANES [J].