On the mechanism of separation of ethanol/water mixtures by pervaporation II. Experimental concentration profiles

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Mulder, M.H.V. and Franken, A.C.M. and Smolders, C.A. (1985) On the mechanism of separation of ethanol/water mixtures by pervaporation II. Experimental concentration profiles. Journal of Membrane Science, 23 (1). pp. 41-58. ISSN 0376-7388

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Abstract:Ethanol—water concentration profiles in cellulose acetate membranes were measured under steady-state pervaporation conditions. Knowledge of these profiles leads to a better understanding of the diffusion process during pervaporation. The concentration profiles were determined by a film-stack method, using three to six layers. It is shown that permeation of ethanol—water mixtures proceeds in a coupled way and that crossterm diffusion coefficients need to be considered. Furthermore, the occurrence of sorption resistances at the feed/membrane interface can be established from these experiments
Item Type:Article
Copyright:© 1985 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/67234
Official URL:http://dx.doi.org/10.1016/S0376-7388(00)83133-6
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