Using a microheterogeneous model to assess the applicability of ion-exchange membranes in the process of reverse electrodialysis

This paper shows the possibility of using a microheterogeneous model to describe properties ion-exchange membranes and calculate characteristics reverse electrodialyzer from data obtained. We studied eight samples heterogeneous cation exchange (two each type membrane). The differed in year issue storage conditions. It is shown that for MK-40 MA-41, samples' can differ significantly. counterions transport numbers calculated within framework Ralex insignificantly. counterion number 1 mol/L sodium chloride solution 0.96 CM 0.98 ± 0.01 AMH. For membrane, same 0.94 0.04, MA-41 it 0.85 0.1. calculating predicting open-circuit voltage based on simple physicochemical measurements allows selecting best membrane pairs electrodialysis process. Comparison potential value obtained transfer with experimental showed case membranes, difference between values 2%. open circuit was 0.19 V/membrane pair or 1.69 V investigated nine chambers.