Chronopotentiometric response of a cation exchange membrane in contact with chromiumIII solutions

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Publication Details

Output type: Journal article

UM6P affiliated Publication?: No

Author list: Taky M., Pourcelly G., Gavach C., Elmidaoui A.

Publisher: Elsevier

Publication year: 1996

Journal: Desalination (0011-9164)

Volume number: 105

Issue number: 3

Start page: 219

End page: 228

Number of pages: 10

ISSN: 0011-9164


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The paper deals with the transfer of ionic species containing CrIII through a CMV cation-exchange membrane. Two electrochemical techniques are used: the chronopotentiometric response and the transport number measurements. According to the composition of the anodic solution containing CrCl3, hydroxyl ion-chromiumIII complex forms enter into the membrane and water splitting occurs. This phenomenon is attributed to a poisoning of the membrane by these multivalent complex forms which change locally the selectivity of the cation-exchange membrane. © 1996, All rights reserved.


Cation exchange membrane, Chromium, Chronopotentiometry, Transport number


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