Work

Numerical Study of Salt Ion Transport in Electromembrane Systems with Ion-Exchange Membranes Having Geometrically Structured Surfaces

Year: 2025

Type: article

Abstract: The article is devoted to the theoretical analysis of the effect of geometric modification of the surfaces of ion-exchange membranes in electromembrane systems (EMS) on the salt ion transport using a 2D mathematical model of the transport process in the desalination channel based on boundary value problems for the coupled system of Nernst-Planck-Poisson and Navier-Stokes equations. The main patterns of salt ion transport are established taking into account diffusion, electromigration, forced convection, electroconvection, and geometric modification of the surface of ion-exchange membranes. It is shown that geometric modification of the surface of ion-exchange membranes significantly changes both the formation and development of electroconvection. A significant combined effect of electroconvection and geometric modification of the surface of ion-exchange membranes in the desalination channel on the salt ion transport is shown, as well as a complex, nonlinear and non-stationary interaction of all the main effects of concentration polarization in the desalination channel.

Source: Mathematics

DOI: 10.3390/math13091523

Authors: Evgenia Kirillova, Natalia Chubyr, Anna Kovalenko, Mahamet Urtenov

Institutions: RheinMain University of Applied Sciences, Kuban State University

Language: English

Topic: Membrane-based Ion Separation Techniques

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Russian Science Foundation