Dehydration of glycerine-water mixtures by pervaporation

被引：18

作者：

Burshe, MC ^{[1
]}

Sawant, SB ^{[1
]}

Pangarkar, VG ^{[1
]}

机构：

[1] Univ Bombay, Dept Chem Technol, Bombay 400019, Matunga, India

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 1999年 / 76卷 / 02期

关键词：

dehydration; glycerine; membranes; pervaporation; sorption;

D O I：

10.1007/s11746-999-0220-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Dehydration of glycerine-water mixtures by pervaporation (PV) was studied with Nafion(R) (NA), cellulose triacetate (CA), polyimide, carboxylated polyvinyl chloride (CPVC), and polyethersulfone (PES) membranes. PES membrane yielded the highest selectivity (6580) and CPVC membrane yielded the lowest selectivity (1552) at 5% by weight of water in the feed and 30 degrees C. The NA membrane yielded the highest permeation flux (0.2-1.45 kg/m(2)h) of water over the entire water concentration range. Energy of activation of permeation for water was in the range of 7-15 kJ/mol, being highest for CPVC and lowest for CA. Comparison of PV and vapor liquid equilibrium data showed that the former gave better results, particularly for concentrating glycerine above 90 wt%.

引用

页码：209 / 214

页数：6

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