Continuous Separation of Cesium Based on NiHCF/PTCF Electrode by Electrochemically Switched Ion Exchange

Nickel hexacyanoferrate （NiHCF） film was synthesized on porous three-dimensional carbon felt （PTCF） substrate by repetitious batch chemical depositions, and the NiHCF/PTCF electrode was used as electrochemically switched ion exchange （ESIX） electrode in a packed bed for continuous separation for ces...

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Bibliographic Details
Published in:Chinese journal of chemical engineering 2012-10, Vol.20 (5), p.837-842
Main Author: 孙斌 郝晓刚 王忠德 张忠林 刘世斌 官国清
Format: Article
Language:English
Subjects:
Carbon
Cesium
cesium separation
Diaphragms
electrochemically switched ion exchange
Electrodes
Nickel
nickel hexacyanoferrate
porous carbon felt
Reactors
Separation
Three dimensional
扫描电子显微镜
电化学控制离子交换
离子交换容量
离子交换能力
连续分离
铁氰化镍
铯离子
镍电极
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Summary:Nickel hexacyanoferrate （NiHCF） film was synthesized on porous three-dimensional carbon felt （PTCF） substrate by repetitious batch chemical depositions, and the NiHCF/PTCF electrode was used as electrochemically switched ion exchange （ESIX） electrode in a packed bed for continuous separation for cesium ions. The morphologies of the prepared electrodes were characterized by scanning electron microscopy and the effects of solution concentration on the ion-exchange capacity of the electrodes were investigated by cyclic voltammetry technique. Cycling stability and long-term storage stability of NiHCF/PTCF electrodes were also studied. The NiHCF/PTCF electrodes with excellent ion-exchange ability were used to assemble a diaphragm-isolated ESIX reactor for cesium separation. Continuous separation of cesium and regeneration of NiHCF/PTCF electrode based on the diaphragm-isolated reactor were performed in a laboratory-scale two-electrode system.
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(12)60407-8