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1624765 
Journal Article 
Pervaporation of alcohol-water mixtures on cellulose hydrate membranes 
Nagy, E; Borlai, O; Stelmaszek, J 
1983 
Yes 
Journal of Membrane Science
ISSN: 0376-7388 
16 (1983) 
79-89 
The permeation rate and selectivity of pretreated cellulose hydrate membranes for binary mixtures of alcohols and water, as well as their pure components, were studied at 333 K. The membranes were modified by solvent pretreatment with isopropanol, water, or their binary mixtures, and by heat treatment in air. The permeation rate of membranes towards the pure components and their mixtures depends very strongly on the preswelling of the membrane. The data obtained with solvent mixtures differ significantly from those expected on the basis of the pure component permeation rate. With increasing pressure at the permeate side, the composition of permeate approaches the thermodynamic equilibrium vapor composition of the feed mixtures. 
thermodynamics; chemical reactions; vapors; alcohol; membranes