Review

  • Journal of Nuclear Fuel Cycle and Waste Technology
  • Volume 3(3); 2005
  • Article

Journal of Nuclear Fuel Cycle and Waste Technology 2005;3(3):177-181. Published online: Sep, 30, 2005

PDF Citation

Identification of Uranium Species Released from the Waste Glass in Contact with Bentonite

  • Seung-Soo Kim ; Kwan-Sik Chun ; Chul-Hyung Kang ; Phil-Su Han and Jong-Won Choi
Abstract

Yellowish uranium compounds were enriched at the interface between a Ca-bentonite block and a waste glass, containing about 20% uranium oxide, in contact with the block due to the dissolution of uranium by a synthetic granitic groundwater in Ar atmosphere. The uranium compound formed for 6 years leach time was identified as a beta-uranophane [Ca(UO2)2(SiO3OH)25H2O] using XRD, IR and mass spectrometer. The solubility of the beta-uranophane was measured to be about 10-6mole/L in de-mineralized water at 80℃.

Keywords

Uranium alteration,Waste glass,Bentonite,Uranophane,Leaching