Approximation and analysis of pervaporation of binary mixtures using nonequilibrium thermodynamics approach

In present work the nonequilibrium thermodynamic advantages for pervaporation process approximation are discussed. The calculation model, which aligns nonequilibrium thermodynamic, pervaporation data and vapor-liquid equilibrium data, is presented. The approximation of vapor-liquid equilibrium data for feed mixtures was performed by Wilson and NRTL equations. Approbation of proposed approach with the use of different membranes was carried out for six binary systems: methanol-water, ethanol-water, propanol-1-water, propanol-2-water, butanol-1-water and acetone-water. The compatibility between the experimental pervaporation data and the results of estimation are discussed.