Influence of the alpha radiation on the UO2 dissolution in high pH cementitious waters

Research outputpeer-review

5 Scopus citations


To assess the long-term behaviour of spent fuel in conditions of the Belgian Supercontainer design, dissolution tests were performed to determine the solubility and dissolution rate of depleted and Pu-doped UO2 in synthetic cement waters. The results confirm the behaviour generally observed with UO2 at neutral pH in absence of H2. Due to the radiolysis of water, the produced oxidizing species oxidise the U(IV) to U(VI), inducing an increase of the uranium concentration. Consequently, the dissolution rate increases from the depleted UO2 to the most active doped UO2. Imposing a H2 overpressure had no significant effect on the UO2 behaviour.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number1
StatePublished - 1 Apr 2015

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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