Concentration Distribution in Diffusion Layer in the Overlimiting Mode of Electrodialysis
For single-component solutions in conditions of perfectly selective cation-exchange membrane in relation to electrodialysis we obtained numerical solution to the problem of formation of ion fluxes in the diffusion boundary layer formulated on the basis of Nernst-Planck equations under nonlinear character of concentration change with dissociation products of water - hydrogen and hydroxyl ions. In the overlimiting mode of electrodialysis we obtained the dependences of transfer numbers for ions, involved in mass transfer, on the current density and changes in local transfer numbers by the thickness of the diffusion layer.