Volatility of radioactive iodine under gamma irradiation: effects of H2O2 and NaOH on the decomposition rate of volatile molecular iodine dissolved in aqueous solutions

  • TaeJun Kim
  • Minsik Kim
  • Sang-Hyuk Jung
  • Jei-Won Yeon
Article
  • 8 Downloads

Abstract

The decomposition of molecular iodine by hydrogen peroxide and sodium hydroxide was kinetically studied in aqueous solutions at ambient temperature. To obtain an effective decomposition rate constant under experimental conditions, the concentration of triiodide ions was measured over time instead of that of molecular iodine. Overall, sodium hydroxide was regarded as a more effective decomposer than hydrogen peroxide. As demonstrated in the present study, existing methodologies can be simplified by grouping relevant reaction steps in order to estimate iodine volatility under a severe accident condition for a nuclear power plant.

Keywords

Iodine volatility Radioactive iodine Decomposition rate Hydrogen peroxide Severe accident Nuclear power plant 

Notes

Acknowledgements

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT: the Ministry of Science and ICT) (No. 2017M2A8A4015281).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • TaeJun Kim
    • 1
    • 2
  • Minsik Kim
    • 1
    • 2
  • Sang-Hyuk Jung
    • 1
  • Jei-Won Yeon
    • 1
    • 2
  1. 1.Nuclear Chemistry Research DivisionKorea Atomic Energy Research InstituteDaejeonRepublic of Korea
  2. 2.Radiochemistry and Nuclear NonproliferationUniversity of Science and TechnologyDaejeonRepublic of Korea

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