Characteristics of sodium alginate membranes for the pervaporation dehydration of ethanol-water and isopropanol-water mixtures

被引:191
作者
Huang, RYM [1 ]
Pal, R [1 ]
Moon, GY [1 ]
机构
[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
关键词
pervaporation; alginic acid; sodium alginate; calcium alginate; ionic crosslinking;
D O I
10.1016/S0376-7388(99)00071-X
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Alginate membranes for the pervaporation dehydration of ethanol-water and isopropanol-water mixtures were prepared and tested. The sodium alginate membrane was water soluble and mechanically weak but it showed promising performance for the pervaporation dehydration. To control the water solubility the sodium alginate membrane was crosslinked ionically using various divalent and trivalent ions. Among them the alginate membrane crosslinked with Ca2+ ion showed the highest pervaporation performance in terms of the flux and separation factors. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:101 / 113
页数:13
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