Ion exchange membranes and separation processes with chemical reactions

1991 ◽  
Vol 21 (4) ◽  
pp. 283-294 ◽  
Author(s):  
T. Sata
Keyword(s):  
Ion Exchange ◽  
Chemical Reactions ◽  
Ion Exchange Membranes ◽  
Separation Processes

Hybrid ion-exchange membranes for fuel cells and separation processes

2007 ◽  
Vol 173 (1) ◽  
pp. 68-76 ◽  
Author(s):  
F.J. Fernández-Carretero ◽  
V. Compañ ◽  
E. Riande
Keyword(s):  
Fuel Cells ◽  
Ion Exchange ◽  
Ion Exchange Membranes ◽  
Separation Processes

scholarly journals Behavior of Embedded Cation-Exchange Particles in a DC Electric Field

2019 ◽  
Vol 20 (14) ◽  
pp. 3579 ◽  
Author(s):  
Lucie Vobecká ◽  
Tomáš Belloň ◽  
Zdeněk Slouka
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Intrinsic Property ◽  
Ion Exchange Resin ◽  
Membrane Properties ◽  
Ion Exchange Membranes ◽  
Separation Processes ◽  
Actual Performance

Electrodialysis and electrodeionization are separation processes whose performance depends on the quality and properties of ion-exchange membranes. One of the features that largely affects these properties is heterogeneity of the membranes both on the macroscopic and microscopic level. Macroscopic heterogeneity is an intrinsic property of heterogeneous ion-exchange membranes. In these membranes, the functional ion-exchange component is dispersed in a non-conductive binder. The functional component is finely ground ion-exchange resin particles. The understanding of the effect of structure on the heterogeneous membrane properties and behavior is thus of utmost importance since it does not only affect the actual performance but also the cost and therefore competitiveness of the aforementioned separation processes. Here we study the electrokinetic behavior of cation-exchange resin particle systems with well-defined geometrical structure. This approach can be understood as a bottom up approach regarding the membrane preparation. We prepare a structured cation-exchange membrane by using its fundamental component, which is the ion exchange resin. We then perform an experimental study with four different experimental systems in which the number of used cation-exchange particles changes from 1 to 4. These systems are studied by means of basic electrochemical characterization measurements, such as measurement of current–voltage curves and direct optical observation of phenomena that occur at the interface between the ion-exchange system and the adjacent electrolyte. Our work aims at better understanding of the relation between the structure and the membrane properties and of how structure affects electrokinetic behavior of these systems.

Equilibrium Sorptions in Heterogeneous Ion Exchange Membranes

1992 ◽  
Vol 57 (9) ◽  
pp. 1905-1914
Author(s):  
Miroslav Bleha ◽  
Věra Šumberová
Keyword(s):  
Experimental Data ◽  
Ion Exchange ◽  
Total Content ◽  
Distribution Coefficients ◽  
Exchange Capacity ◽  
Ion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Equilibrium Sorption ◽  
Inhomogeneity Factor

The equilibrium sorption of uni-univalent electrolytes (NaCl, KCl) in heterogeneous cation exchange membranes with various contents of the ion exchange component and in ion exchange membranes Ralex was investigated. Using experimental data which express the concentration dependence of equilibrium sorption, validity of the Donnan relation for the systems under investigation was tested and values of the Glueckauf inhomogeneity factor for Ralex membranes were determined. Determination of the equilibrium sorption allows the effect of the total content of internal water and of the ion-exchange capacity on the distribution coefficients of the electrolyte to be determined.

Interpolymer ion exchange membranes for CapMix process

Desalination ◽  
2020 ◽  
Vol 482 ◽  
pp. 114384
Author(s):  
Katarzyna Smolinska-Kempisty ◽  
Anna Siekierka ◽  
Marek Bryjak
Keyword(s):  
Ion Exchange ◽  
Ion Exchange Membranes
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