Pervaporation study for different binary mixtures in the esterification system of lactic acid with ethanol

被引：36

作者：

Delgado, Patricia ^{[1
]}

Sanz, Maria Teresa ^{[1
]}

Beltran, Sagrario ^{[1
]}

机构：

[1] Univ Burgos, Dept Chem Engn, Burgos 09001, Spain

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2008年 / 64卷 / 01期

关键词：

Pervaporation; PERVAP (R); Esterification; Lactic acid; Ethyl lactate;

D O I：

10.1016/j.seppur.2008.08.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pervaporation experiments were per-formed for some binary mixtures involved in the esterification of lactic acid with ethanol: water/ethanol, water/ethyl lactate and water/lactic acid. The effects of feed composition and operating temperature on the membrane performance were analyzed. Two different commercial hydrophilic membranes PERVAP (R) 2216 and PERVAP (R) 2201 were tested for the system water/ethanol. PERVAP (R) 2201 membrane was chosen for further experiments due to its better selectivity towards water. The permeation flux, as well as permeances, was found to increase with water feed concentration. The influence of temperature on the permeation flux can be described by an Arrhenius-type expression. However, not a great influence of temperature on the permeance was found. Separation factor and selectivity were found to depend on water feed concentration but not a clear influence oftemperature was found on these two parameters. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：78 / 87

页数：10

共 24 条

[1]

*ASP TECHN, ASP PLUS 11 1

[2] A continuous reactive separation process for ethyl lactate formation [J].