A TRANSPORT MODEL FOR REVERSE OSMOSIS SEPARATION OF BINARY ORGANIC LIQUID MIXTURES

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Abstract
A set of transport equations was derived for the separation of the binary mixtures of organic solvents on the basis of the surface force-pore flow (SFPF) model. These equations enable the quantitative prediction of the membrane performance data under a given set of operating conditions together with the information on the membrane pore size, interaction forces working between the solution components and the membrane material, and the activity and the molecular radii of solution components. The usefulness of such transport equations is shown for the system ethyl alcohol-heptane-cellulose membrane and some other separation systems.