Ion transport

The removal of nitrate ions through SB-6407 and Neosepta AMX anion exchange membranes has been studied under Donnan dialysis conditions as a function of receiver phase concentration and co-existence anions in the feed phase. For both membranes, it was observed that the transport of nitrate increased

Empirically derived parameters and analytical solutions were used to determine possible mechanistic processes of organo-macromolecular fate in dead-end hyperfiltration at abnormal hydraulic pressure settings. Ideally the concentration polarization is assumed to have an ideal geometry but this may no

An electrodialysis process was employed to investigate the concentration of formic, acetic and propionic acid solutions under different experimental conditions. In this process interpolymer-type ion-exchange membranes were used due their high chemical stability and durability. The effects of concent

A review of works resulting in development of a hierarchic system of mathematical models is presented. Different scales of ion transport are considered: 1) in the membrane, where two approaches are used, the irreversible thermodynamics and modelling of the membrane material, the last permits to link

Concentration dependencies of the membrane electric conductivity under alternating current and fluxes of anions through anion-exchange membranes (AEMs) under direct current were measured in 0.002–1.0 M sodium salt solutions of carbonic and phosphoric acids. Several commercial AEMs were studied: AFN,