scholarly journals Modification of an Ion-Exchange Membrane Surface by Plasma Process Part 3: Interfacial Resistance of Monovalent Cation Perm-Selective Membrane from Nafion®

1990 ◽  
Vol 63 (8) ◽  
pp. 2150-2153 ◽  
Author(s):  
Zempachi Ogumi ◽  
Yoshiharu Uchimoto ◽  
Masanori Tsujikawa ◽  
Kazuaki Yasuda ◽  
Zen-ichiro Takehara
Keyword(s):  
Ion Exchange ◽  
Membrane Surface ◽  
Monovalent Cation ◽  
Ion Exchange Membrane ◽  
Interfacial Resistance ◽  
Plasma Process ◽  
Selective Membrane ◽  
Exchange Membrane

scholarly journals Fabrication of a lead ion selective membrane based on a polycarbazole Sn(iv) arsenotungstate nanocomposite and its ion exchange membrane (IEM) kinetic studies

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4210-4220
Author(s):  
Mohd. Zeeshan ◽  
Rais Ahmad ◽  
Asif Ali Khan ◽  
Aftab Aslam Parwaz Khan ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Polyvinyl Chloride ◽  
Cation Exchanger ◽  
Kinetic Studies ◽  
Ion Exchange Membrane ◽  
Lead Ion ◽  
Solution Technique ◽  
Casting Solution ◽  
Selective Membrane ◽  
Exchange Membrane

A polycarbazole-Sn(iv) arsenotungstate (Pcz-SnAT) nanocomposite cation exchanger membrane (CEM) was prepared via the casting solution technique utilizing polycarbazole-Sn(iv) arsenotungstate and PVC (polyvinyl chloride) as a binder.

Impact of ion exchange membrane surface charge and hydrophobicity on electroconvection at underlimiting and overlimiting currents

2017 ◽  
Vol 523 ◽  
pp. 36-44 ◽  
Author(s):  
K.A. Nebavskaya ◽  
V.V. Sarapulova ◽  
K.G. Sabbatovskiy ◽  
V.D. Sobolev ◽  
N.D. Pismenskaya ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Surface Charge ◽  
Membrane Surface ◽  
Ion Exchange Membrane ◽  
Exchange Membrane ◽  
Membrane Surface Charge

Electrolytic denitrification with an ion-exchange membrane in groundwater

2015 ◽  
Vol 15 (6) ◽  
pp. 1320-1325 ◽  
Author(s):  
Yoo Jin Kim ◽  
Kwanyong Lee ◽  
Ho Young Cha ◽  
Kyung Min Yoo ◽  
Chil Sung Jeon ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Rural Areas ◽  
Nitrate Removal ◽  
Nitrate Contamination ◽  
Ion Exchange Membrane ◽  
Cathode Side ◽  
Reversible Reactions ◽  
Selective Membrane ◽  
Laboratory Reactor ◽  
Exchange Membrane

Nitrate contamination of groundwater is an important issue in rural areas. In this study, an electrolytic method for the denitrification of groundwater was investigated in a laboratory reactor. We used an ion-exchange membrane, employing a titanium oxide anode and five kinds of cathode for the investigation. The nitrate removal efficiencies with Cu, Pb, Ti/Ir/Ru, Ti/Ir/Ta, and Zn cathodes were 30.0%, 59.9%, 73.8%, 23.3%, and 80.6%, respectively. A cation-selective membrane was employed to separate the electrode compartments, and only the proton produced in the anode side was permitted to the cathode side in order to avoid reversible reactions. In terms of the nitrate removal, good experimental results were obtained by using the membrane reactor equipped with the Zn cathode. The nitrate concentration level dropped from 30 to 6 mg/L, which is below the limit for drinking water. The pH was not affected significantly by the current density and it increased up to 9.0 at 100 mA/cm2. The nitrate removal efficiency showed the highest value with 1 mM of NaCl as an electrolyte. The impression was that membrane electrolysis made it possible to avoid the re-oxidation problem. It appears clear that electrolytic denitrification with an ion-exchange membrane is a very effective process with a mean energy consumption of only between 26.9 and 112.9 kWh/kg-NO3.

In situ investigation of electrical inhomogeneity of ion exchange membrane surface using scanning electrochemical microscopy

2016 ◽  
Vol 56 (11) ◽  
pp. 1006-1013 ◽  
Author(s):  
D. Yu. Butylskii ◽  
S. A. Mareev ◽  
V. V. Nikonenko ◽  
N. D. Pismenskaya ◽  
C. Larchet ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Membrane Surface ◽  
Scanning Electrochemical Microscopy ◽  
Ion Exchange Membrane ◽  
In Situ Investigation ◽  
Exchange Membrane ◽  
Electrochemical Microscopy
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