Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Characteristics of the Electrochemical Ion Exchanger for the Treatment of Cations in Nuclear Wastewater

원자력 폐수의 양이온 처리를 위한 전기화학적 이온교환체의 특성

  • Received : 2016.10.26
  • Accepted : 2016.11.27
  • Published : 2016.12.31
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Abstract

Electrochemical ion exchange method is expected to be one of the most acceptable techniques for the separation of radioactive cations from nuclear wastewater. In this study a thin film of hexacyanoferrate on nickel surface was derivatized chemically in an aqueous potassium-ferricyanide solution. Electrochemical redox behavior of the nickel hexacyanoferrate(NiHCNFe) film electrode was investigated with the use of cyclic voltammetry potentiostated from -100 to 800 mV versus SCE. The electro-reduction characteristics of the NiHCNFe film were examined in the cobalt solutions. The NiHCNFe ion exchanger was more useful at lower concentration, lower temperature, and pH7 of the cobalt solution. The capacity loss of NiHCNFe was 0.018%/cycle that was less than the average loss of 2~3%/cycle of the convective organic exchanger. The 45~55% of the initial cobalt ions was electro-deposited on the NiHCNFe by using continuous recirculating reactor system. As a result, it was found that the electroactive NiHCNFe films showed better performance than the organic resins for the separation of cobalt ion from the aqueous solutions.

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References

  1. 한국원자력안전기술원 : 2015년 원자력안전연감, 한국원자력안전기술원, p. 247, 2016.
  2. M. R. Duignan and C. A. Nash, "Removal of cesium from Savannah River site waste with spherical resorcinol formaldehyde ion exchange resin : experimental tests", Sep. Sci. Technol., vol. 45, p. 1828, 2010. https://doi.org/10.1080/01496395.2010.493105
  3. X. Hao, T. Yan, Z. Wang, S. Liu, Z. Liang, Y. Shen, and M. Pritzker, "Unipolar pulse electrodeposition of nickel hexacyanoferrate thin films with controllable structure on platinum substrates", Thin Solid Film, vol. 520, p. 2438, 2012. https://doi.org/10.1016/j.tsf.2011.10.005
  4. C. A. Basha, P. K. Ghosh, and G. Gajalakshmi, "Total dissolved solids removal by electrochemical ion exchange (IEX) process", Electrochim. Acta, vol 54, p. 474, 2008. https://doi.org/10.1016/j.electacta.2008.07.040
  5. J. H. Lee and Y. G. Hwang, "Preparation of nickel hexacyanoferrate ion exchanger for electrochemical separation of cations", Appl. Chem. Eng., vol 21, p. 52 2010.
  6. R. E. Sabzi, K. Kant, and D. Losic, "Electrochemical synthesis of nickel hexacyanoferrate nanoarrays with dots, rods and nanotubes morphology using a porous alumina template", Electrochim. Acta, vol. 55, p. 1829, 2010. https://doi.org/10.1016/j.electacta.2009.10.075
  7. Y. G. Hwang, "A study on the separation of cesium cations by using electrochemical ion exchanger of KNiFe(CN)6", J. of the Korean Electrochem. Soc., vol. 15, p. 256, 2012. https://doi.org/10.5229/JKES.2012.15.4.256
  8. S. T. Arm, D. L. Blanchard, and S. K. Fiskum, 'Chemical degradation of an ion exchange resin processing salt solution', Sep. Purif. Technol., vol. 43, p. 59, 2005. https://doi.org/10.1016/j.seppur.2004.10.001
  9. S. K. Fiskum, S. T. Arm, M. J. Steele, and M. R. Thorson, 'Spherical resorcinol-formaldehyde performance testing with Hanford tank waste', Solvent Extra. Ion Exch., vol. 26, p. 435, 2008. https://doi.org/10.1080/07366290802182691