Mathematical Modeling of the Processes of Convective Diffusion and Sorption in a Three-Layer Porous Body. II. Quantitative Analysis of the Concentration of Impurity Particles on the Boundaries of Phase Contact

We perform a quantitative analysis of the concentration of an impurity migrating with a solution in a three-layer porous body in the presence of sorption processes on the contact boundaries of macroelements under the conditions of imperfect mass contact. To determine the desired functions from the contact conditions of equality of the diffusion fluxes, we deduce a system of integral equations. On the basis of the numerical analysis of the obtained solutions, it is shown that the variations of the sorption intensity factors in the second and third contacting layers, of the relative diffusion coefficient in the second layer, of the convective transfer velocity coefficients in the first and second layers, and of the coefficients of concentration dependence of chemical potentials strongly affect the behavior and/or the values of the impurity concentration functions on the contact boundaries of the macroelements participating in the formation of the porous layer.