A Description of Reverse Osmosis using Practical Kedem-Katchalsky Equations.

The work is concerned with an analytical description of reverseosmosis using the Kedem-Katchalsky equations.The process has been considered for well-mixed solutions.We have obtained formulas describing the concentration of a solution(purified by reverse osmosis) as a function of the transportparameters of a membrane, concentration of the initial solution, andthe mechanical pressures on the membrane.The formulae are illustrated by numerical computations.Our results may be applicable to biophysical studies concerningreverse osmosis in biological membrane systems.