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Pervaporation Separation of Methanol‐Carbontetrachloride Binary Mixtures Using Low Density Polyethylene Membranes
Author(s) -
Şentarlı İnci,
Dinçer Salih,
Savaşçı Ö.Tunç
Publication year - 1998
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(199804)21:4<359::aid-ceat359>3.0.co;2-5
Subject(s) - pervaporation , membrane , methanol , chemical engineering , chemistry , binary number , polyethylene , chromatography , separation (statistics) , organic chemistry , permeation , biochemistry , engineering , arithmetic , mathematics , machine learning , computer science
In this study, the pervaporation behaviour of azeotrope‐forming methanol‐carbontetrachloride binary mixture at different compositions was investigated at 30°C and 45°C through LDPE membranes with two different melt flow indices for two different thicknesses. Experimental fluxes and selectivities for methanol and carbontetrachloride were determined. Theoretical calculations for fluxes based on a solution‐diffusion model as developed by Yeom and Huang using Fujita′s free volume approach and Flory‐Huggins thermodynamics showed deviations from the experimental results. Experimental fluxes were decomposed into sorption and diffusion terms to discuss the effects of experimental conditions.