Generation of Light-Induced Electrical Potential from Ion Exchange Membranes Containing 4,4[sup ʹ]-Bipyridine Moiety: IV. Effect of Presence of n-Type Semiconductors in a Photocell on Electrical Potential

2003 ◽  
Vol 150 (3) ◽  
pp. E141
Author(s):  
Toshikatsu Sata ◽  
Tomoaki Sata
Keyword(s):  
Ion Exchange ◽  
Electrical Potential ◽  
Ion Exchange Membranes

scholarly journals Accurate Determination of Electrical Potential on Ion Exchange Membranes in Reverse Electrodialysis

Separations ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 170
Author(s):  
Yuting Sun ◽  
Lianfa Song
Keyword(s):  
Ion Exchange ◽  
Numerical Method ◽  
Accurate Determination ◽  
Electrical Potential ◽  
Ion Exchange Membranes ◽  
Concentration Difference ◽  
Reverse Electrodialysis ◽  
Selective Transport ◽  
Electrical Potentials

Reverse electrodialysis is a promising membrane technology to generate energy from controlled mixing of water streams of different salinities. Electrical potentials generate on the ion exchange membranes (IEMs) when selective transport of cations and anions across the membranes driven by concentration difference. The accurate determination of the potentials developed on the IEMs is critical to fairly assess the feasibility of the technology. The Nernst–Planck–Poisson (NPP) equations for IEMs (the membranes with fixed charge) were solved numerically with the boundary updating scheme. The validity of this numerical method was verified by the identical values of Donnan potential obtained with the well-established analytical methods. The suitability and applicability of the classic Teorell–Meyer–Siever (TMS) model were assessed by comparison to the simulation results from the numerical method.

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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