Soft electrodes in water desalination: application to multi-valent ions

2019 ◽  
Vol 5 (5) ◽  
pp. 873-883
Author(s):  
G. R. Iglesias ◽  
S. Ahualli ◽  
M. M. Fernández ◽  
M. L. Jiménez ◽  
A. V. Delgado
Keyword(s):  
Aqueous Solutions ◽  
Water Desalination ◽  
Double Layers ◽  
Capacitive Deionization ◽  
Electrical Double Layers

The capacitive deionization (CDI) method, in which the capacitance of the electrical double layers is used for removing ions from aqueous solutions, can be more efficient if some procedures are devised to help the bare electrode double layers in adsorbing ions.

Energy Consumption in Batch-Mode Capacitive Deionization

2016 ◽  
Vol 868 ◽  
pp. 43-49 ◽  
Author(s):  
Hai Bo Li ◽  
Sen Liang ◽  
Mang Mang Gao ◽  
Chang Yeoul Kim
Keyword(s):  
Energy Consumption ◽  
Cell Voltage ◽  
Solution Concentration ◽  
Porous Electrodes ◽  
Water Desalination ◽  
Double Layers ◽  
Capacitive Deionization ◽  
Batch Mode ◽  
Operation Conditions ◽  
Salt Ions

Capacitive deionization (CDI) is a water desalination technique in which salt ions are removed from brackish water by flowing through a spacer channel with porous electrodes on each side. Upon applying a small voltage difference between the two electrodes, cations move to and are accumulated in electrostatic double layers inside the negatively charged cathode and the anions are removed by the positively charged anode. Therefore, one of the advanced merits of CDI is the low driven energy by compared to other desalination technologies. Inspired this, we have performed the calculation on energy consumption of activated carbon based CDI in different operation conditions. The results show that the energy consumptions are significantly related to cell voltage as well as solution concentration. Furthermore, the round trip efficiency as a vital indication in terms of energy consumption have been introduced and discussed as well.

Electrokinetics of polymeric fluids in narrow rectangular confinements

Soft Matter ◽  
2021 ◽  
Author(s):  
Aditya Natu ◽  
Uddipta Ghosh
Keyword(s):  
Cross Section ◽  
Rectangular Cross Section ◽  
Double Layers ◽  
Polymeric Fluids ◽  
Polymeric Liquids ◽  
Electrical Double Layers

Flow of polymeric liquids in narrow confinements of rectangular cross section, in the presence of electrical double layers is analyzed here. Our analysis is motivated by the fact that many...

Molecular solvent models of electrical double layers

1991 ◽  
Vol 36 (11-12) ◽  
pp. 1677-1684 ◽  
Author(s):  
G.M. Torrie ◽  
G.N. Patey
Keyword(s):  
Double Layers ◽  
Electrical Double Layers ◽  
Solvent Models

scholarly journals Capacitive deionization in organic solutions: case study using propylene carbonate

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5865-5870 ◽  
Author(s):  
S. Porada ◽  
G. Feng ◽  
M. E. Suss ◽  
V. Presser
Keyword(s):  
Organic Solvent ◽  
Aqueous Solutions ◽  
Propylene Carbonate ◽  
Capacitive Deionization ◽  
Organic Solutions

We present a study of the performance of capacitive deionization (CDI) when applied to electrosorption in an organic solvent, finding enhanced cell charging voltages and improved salt sorption over electrosoprtion in aqueous solutions.

A brief review on operation of flow-electrode capacitive deionization cells for water desalination

2021 ◽  
Vol 223 ◽  
pp. 34-53
Author(s):  
Khadijeh Dehghan ◽  
Seyed Ahmad Mirbagheri ◽  
Mahdi Alam
Keyword(s):  
Water Desalination ◽  
Capacitive Deionization
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