The effect of pore size distribution on the separation efficiency in surface force pore-flow model-system: isopropanol-water

The surface force pore-flow (SFPF) model is based on solute-membrane materi al interactions at the membrane-solution interface. It has been used to mod el the transport of solute and solvent through membranes under the influenc e of such forces and to determine separation efficiency based on the assump tion of circular pores. It is evident from the model that the pore diameter has: a strong bearing upon the separation efficiency and the mean separati on efficiency can be determined from the pore size distribution. In this wo rk a Monte Carlo simulation technique has been employed to generate a large number of sample pores from the mean and the standard: deviation. The Gaus sian distribution has been used to determine the separation efficiency in t he SFPF model. The results have been compared with the available data for i sopropanol/cellulose acetate/water system and the predicted values agree we ll with the published data.