Results 1 to 10 of about 1,133 (187)

Theoretical Investigation of the Phenomenon of Space Charge Breakdown in Electromembrane Systems [PDF]

open access: yesMembranes, 2022
At present, it is customary to consider the overlimit operating modes of electromembrane systems to be effective, and electroconvection as the main mechanism of overlimiting transfer.
Anna Kovalenko   +3 more
doaj   +6 more sources

Desalination of Neutral Amino Acid Solutions in an Electromembrane System [PDF]

open access: yesMembranes, 2022
This article’s main focus is to highlight significant aspects of amino acid solution demineralization. The main part of the amino acid production method requires the provision of downstream treatment solutions for the process of desalination ...
Tatiana Eliseeva, Anastasiia Kharina
doaj   +4 more sources

Water Splitting and Transport of Ions in Electromembrane System with Bilayer Ion-Exchange Membrane [PDF]

open access: yesMembranes, 2020
Bilayer ion-exchange membranes are mainly used for separating single and multiply charged ions. It is well known that in membranes in which the layers have different charges of the ionogenic groups of the matrix, the limiting current decreases, and the ...
Stanislav Melnikov   +4 more
doaj   +5 more sources

Preconcentration of Fluorescent Dyes in Electromembrane Systems via Electrophoretic Migration [PDF]

open access: yesMicromachines, 2023
Microfluidic preconcentration enables the collection or extraction of low-abundance analytes at specific locations. It has attracted considerable attention as an essential technology in bioengineering, particularly for detection and diagnosis. Herein, we
Minsung Kim, Bumjoo Kim
doaj   +4 more sources

Ion Transport and Process of Water Dissociation in Electromembrane System with Bipolar Membrane: Modelling of Symmetrical Case [PDF]

open access: yesMembranes, 2022
A model is proposed that describes the transfer of ions and the process of water dissociation in a system with a bipolar membrane and adjacent diffusion layers.
Stanislav Melnikov
doaj   +4 more sources

Ion Transport in Electromembrane Systems under the Passage of Direct Current: 1D Modelling Approaches [PDF]

open access: yesMembranes, 2023
For a theoretical analysis of mass transfer processes in electromembrane systems, the Nernst–Planck and Poisson equations (NPP) are generally used. In the case of 1D direct-current-mode modelling, a fixed potential (for example, zero) is set on one of ...
Aminat Uzdenova
doaj   +4 more sources

Mathematical Modeling of the Influence of the Karman Vortex Street on Mass Transfer in Electromembrane Systems [PDF]

open access: yesMembranes, 2023
In electromembrane systems, the transfer of ions near ion-exchange membranes causes concentration polarization, which significantly complicates mass transfer. Spacers are used to reduce the effect of concentration polarization and increase mass transfer.
Aminat Uzdenova   +3 more
doaj   +5 more sources

Erratum: Melnikov, S.; et al. Water Splitting and Transport of Ions in Electromembrane System with Bilayer Ion-Exchange Membrane. Membranes 2020, 10, 346 [PDF]

open access: yesMembranes, 2020
Due to an error during production, Equations (10), (13)–(20), (23), (24) were unreadable in the published paper [...]
Stanislav Melnikov   +4 more
doaj   +2 more sources

Electromass Transfer in the System “Cation Exchange Membrane—Ammonium Nitrate Solution” [PDF]

open access: yesMembranes, 2022
The paper describes an experimental study and the mathematical simulation of the electromembrane transfer of cations of weak electrolytes (namely, ammonium ions), hindered by hydrolysis reactions taking place in the surface layers of the cation exchange ...
Olga Kozaderova   +2 more
doaj   +2 more sources

Current-Voltage Characteristics of Membranes with Different Cation-Exchanger Content in Mineral Salt—Neutral Amino Acid Solutions under Electrodialysis [PDF]

open access: yesMembranes, 2022
The features of the electrochemical behavior of experimental heterogeneous ion-exchange membranes with different mass fractions of sulfonated cation-exchange resin (from 45 to 65 wt%) have been studied by voltammetry during electrodialysis ...
Vera I. Vasil’eva   +3 more
doaj   +2 more sources

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