[Concentration boundary layers thicknesses estimation method based on measurements of the volume flux of ternary solutions].

On a basis of the Kedem-Katchalsky formalism, the estimation method of the concentration boundary layers thicknesses (delta) in a single-membrane system containing non-electrolytic ternary solutions was devised. Square equation, which is a basis of this method, contains transport membrane (L(p), sigma, omega and solution (D, C) parameters and volume osmotic flux (J(v)). These values can be determined in a series of independent experiments. Calculated values (delta) are nonlinearly dependent on concentrations of investigated solutions and membrane system configuration. These non-linearities are an effect of a competition between spontaneously occurring diffusion and natural convection processes. The obtained results of investigation suggest that in turbulent media separated by membrane the super-diffusion processes might also appear.