Osmotic Properties of a Cation Exchange Membrane: Reflection Coefficients of a Solute Larger than 1 in a System with Aqueous Mixed Electrolyte Solutions

1993 ◽  
Vol 97 (5) ◽  
pp. 676-679 ◽  
Author(s):  
A. E. Yaroshchuk ◽  
H. Röttger ◽  
D. Woermann
Keyword(s):  
Cation Exchange ◽  
Electrolyte Solutions ◽  
Cation Exchange Membrane ◽  
Reflection Coefficients ◽  
Mixed Electrolyte ◽  
Mixed Electrolyte Solutions ◽  
Exchange Membrane ◽  
Osmotic Properties

Membrane Potentials across the Cation Exchange Membrane in Aqueous Mixed Electrolyte Solutions

2012 ◽  
Vol 476-478 ◽  
pp. 1825-1828 ◽  
Author(s):  
De Chun Liu ◽  
Ya Ping Zhang
Keyword(s):  
Membrane Potential ◽  
Cation Exchange ◽  
Electrolyte Concentration ◽  
Electrolyte Solutions ◽  
Membrane Potentials ◽  
Cation Exchange Membrane ◽  
Mixed Solution ◽  
Mixed Electrolyte ◽  
High Concentrations ◽  
Exchange Membrane

Membrane Potentials across the Cation Exchange Membrane in Aqueous Mixed Solutions Made of Two Kinds of Electrolytes Were Experimentally Studied. Effects of both the Concentration and the Species of Electrolytes on Membrane Potentials Were Presented. for any Mixed Solution Made of Two Kinds of Electrolytes, when the Total Electrolyte Concentration at Right Side of the Membrane Is Fixed, the Membrane Potential Increases with the Total Electrolyte Concentration at Left Side of the Membrane. however, such Increase Is Rather Slight at both Low and High Concentrations. when the Concentrations at each Side of the Membrane Are Equivalent for Three Mixed Solution Systems, the Membrane Potential Decreases with such Order: ΦKCl+NaCl>ΦKCl+MgCl2>ΦKCl+AlCl3.

Improvement of HI concentration performance for hydrogen production iodine–sulfur process using crosslinked cation-exchange membrane

2021 ◽  
Vol 237 ◽  
pp. 116575
Author(s):  
Nobuyuki Tanaka ◽  
Shin-ichi Sawada ◽  
Tetsuya Yamaki ◽  
Takehide Kodaira ◽  
Takehiro Kimura ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Cation Exchange ◽  
Cation Exchange Membrane ◽  
Exchange Membrane

scholarly journals Evaluation of Electrodialysis Desalination Performance of Novel Bioinspired and Conventional Ion Exchange Membranes with Sodium Chloride Feed Solutions

Membranes ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 217
Author(s):  
AHM Golam Hyder ◽  
Brian A. Morales ◽  
Malynda A. Cappelle ◽  
Stephen J. Percival ◽  
Leo J. Small ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Current Density ◽  
Feed Solution ◽  
Laboratory Scale ◽  
Cation Exchange Membrane ◽  
Limiting Current ◽  
Ion Exchange Membranes ◽  
Experimental Apparatus ◽  
Exchange Membrane

Electrodialysis (ED) desalination performance of different conventional and laboratory-scale ion exchange membranes (IEMs) has been evaluated by many researchers, but most of these studies used their own sets of experimental parameters such as feed solution compositions and concentrations, superficial velocities of the process streams (diluate, concentrate, and electrode rinse), applied electrical voltages, and types of IEMs. Thus, direct comparison of ED desalination performance of different IEMs is virtually impossible. While the use of different conventional IEMs in ED has been reported, the use of bioinspired ion exchange membrane has not been reported yet. The goal of this study was to evaluate the ED desalination performance differences between novel laboratory‑scale bioinspired IEM and conventional IEMs by determining (i) limiting current density, (ii) current density, (iii) current efficiency, (iv) salinity reduction in diluate stream, (v) normalized specific energy consumption, and (vi) water flux by osmosis as a function of (a) initial concentration of NaCl feed solution (diluate and concentrate streams), (b) superficial velocity of feed solution, and (c) applied stack voltage per cell-pair of membranes. A laboratory‑scale single stage batch-recycle electrodialysis experimental apparatus was assembled with five cell‑pairs of IEMs with an active cross-sectional area of 7.84 cm2. In this study, seven combinations of IEMs (commercial and laboratory-made) were compared: (i) Neosepta AMX/CMX, (ii) PCA PCSA/PCSK, (iii) Fujifilm Type 1 AEM/CEM, (iv) SUEZ AR204SZRA/CR67HMR, (v) Ralex AMH-PES/CMH-PES, (vi) Neosepta AMX/Bare Polycarbonate membrane (Polycarb), and (vii) Neosepta AMX/Sandia novel bioinspired cation exchange membrane (SandiaCEM). ED desalination performance with the Sandia novel bioinspired cation exchange membrane (SandiaCEM) was found to be competitive with commercial Neosepta CMX cation exchange membrane.

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