SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (5): 837-842.

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

孙斌1, 郝晓刚1, 王忠德1, 张忠林1, 刘世斌1, 官国清2   

  1. 1. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
    2. North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori 030-0813, Japan
  • 收稿日期:2011-08-11 修回日期:2011-12-01 出版日期:2012-10-28 发布日期:2012-11-06
  • 通讯作者: HAO Xiaogang,E-mail:xghao@tyut.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21276173);the National Science Foundation of Shanxi Province (2012011020-5, 2012011006-1);the International Joint Research Project of Shanxi Province (2011081028)

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

SUN Bin1, HAO Xiaogang1, WANG Zhongde1, ZHANG Zhonglin1, LIU Shibin1, GUAN Guoqing2   

  1. 1. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
    2. North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori 030-0813, Japan
  • Received:2011-08-11 Revised:2011-12-01 Online:2012-10-28 Published:2012-11-06
  • Supported by:
    Supported by the National Natural Science Foundation of China (21276173);the National Science Foundation of Shanxi Province (2012011020-5, 2012011006-1);the International Joint Research Project of Shanxi Province (2011081028)

摘要: 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.

关键词: nickel hexacyanoferrate, electrochemically switched ion exchange, cesium separation, porous carbon felt

Abstract: 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.

Key words: nickel hexacyanoferrate, electrochemically switched ion exchange, cesium separation, porous carbon felt