Pervaporation separation of ethyl acetate-ethanol binary mixtures using polydimethylsiloxane membranes

被引：53

作者：

Hasanoglu, A ^{[1
]}

Salt, Y ^{[1
]}

Keleser, S ^{[1
]}

Özkan, S ^{[1
]}

Dinçer, S ^{[1
]}

机构：

[1] Yildiz Tech Univ, Dept Chem Engn, TR-34210 Istanbul, Turkey

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2005年 / 44卷 / 03期

关键词：

pervaporation; sorption; desorption; PDMS; ethanol; ethyl acetate;

D O I：

10.1016/j.cep.2004.06.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Pervaporation separation of azeotrope forming ethyl acetate-ethanol mixtures was investigated by using a selfmade polydimethylsiloxane (PDMS) membrane. Sorption, desorption and pervaporation experiments for ethyl acetate-ethanol mixture with different concentrations were conducted at 30, 40 and 50 degreesC. The effect of process parameters such as feed concentration and temperature on flux and selectivity is discussed. Equilibrium curves are determined by vapor-liquid equilibrium calculations using Wilson equation. Data obtained by pervaporation are compared with the points determined from vapor-liquid equilibrium calculations. Experiments show that PDMS membrane is much more selective to ethyl acetate than ethanol. Increase in temperature yields higher total fluxes and lower selectivities of ethyl acetate. While the ethyl acetate concentrations increase from 20 to 94.5 wt.%, total fluxes and ethyl acetate selectivities change in the ranges of 756-8473 gr/m(2)h and 5.30-1.18, respectively. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：375 / 381

页数：7

共 9 条

[1]

Brandrup J., 1975, POLYM HDB

[2]

HASANOGLU A, 2003, SORPTIN PERVAPORATIO

[3]

HIRATA M, 1975, COMPUTER AIDED DATA

[4] PERVAPORATION, SOLUBILITY ASPECTS OF THE SOLUTION-DIFFUSION MODEL [J].

MULDER, MHV ;

SMOLDERS, CA .

SEPARATION AND PURIFICATION METHODS, 1986, 15 (01) :1-19

[5] Sorption behavior and preliminary pervaporation results of cross-linked polyvinylalcohol and polydimethylsiloxane membranes prepared for the separation of water-ethylacetate mixtures [J].

Salt, Y ;

Hasanoglu, A ;

Dinçer, S .

CHEMICAL ENGINEERING COMMUNICATIONS, 2003, 190 (5-8) :564-572

[6] Dense organic catalytic membranes for fine chemical synthesis [J].

Vankelecom, IFJ ;

Jacobs, PA .

CATALYSIS TODAY, 2000, 56 (1-3) :147-157

[7]

Yeom CK, 1997, J APPL POLYM SCI, V63, P221, DOI 10.1002/(SICI)1097-4628(19970110)63:2<221::AID-APP9>3.0.CO

[8]

2-X

[9]

Yuzhong Z., 1993, J MEMBRANE SCI, V80, P297

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