Removing Cs from nuclear waste liquid by crown ether and heteropoly acid: Simulated tests

  • Zhu Lin
  • Liu Zhongqun
  • Cheng Wenjun
  • Cheng Shaojin
Research and Development of Isotopes

Abstract

The extraction behavior of DB21C7-HPW synergistic system for Cs has been investigated and compared with that of DB21C7. Two simulated radioactive waste have been examined. It shows that this synergistic system is not only effective for ordinary waste SAW1, but also for the waste of high concentration of nitrates (SAW3). An extraction percentage 99.1% of Cs of SAW3 was obtained by an extracting stage of 5 and scrubbing stage of 3. The stability of synergistic agents towards radiolysis is satisfied and the selectivity for Cs is quite good. Both the additive compound and the extracted Cs complex of DB21C7 and HPW have been separated and identified.

Keywords

Ether Nitrate Physical Chemistry Inorganic Chemistry Crown Ether 

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Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • Zhu Lin
    • 1
  • Liu Zhongqun
    • 1
  • Cheng Wenjun
    • 1
  • Cheng Shaojin
    • 1
  1. 1.Sichuan Union UniversityChengdu(P. R. China)

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