“…Later, some modifications of this model [39,[165][166][167] and numerous applications are presented in [14,28,39,[165][166][167][168][169][170][171][172][173][174][175][176][177][178]. The application of the microheterogeneous model allows, along with the electrical conductivity of the membrane [168,[170][171][172][173]177,178], the determination of electrolyte diffusion permeability [14,21], permselectivity (ion transport numbers) [14,21,28,174,179], electrolyte sorption [180][181][182] and some other properties [14,21,176,183]. It is possible to quantitatively describe the concentration dependences of the mentioned membrane characteristics based on a single set of structural and kinetic parameters [14,21,176].…”