Theoretical Study of Salt Ion Transport in EMS with Ion-Exchange Membranes Having Geometrically Structured Surfaces Article Swipe
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· 2025
· Open Access
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· DOI: https://doi.org/10.20944/preprints202503.2323.v1
· OA: W4409016523
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.
