Plutonium dioxide dissolution in glass Page: 4 of 68
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Vienna et al., Plutonium Dioxide Dissolution in Glass
To prove the technical and economic feasibility of the dispositioning of excess weapons
usable materials by vitrification, it is necessary to demonstrate that PuO2 feedstock can be
dissolved in glass in sufficient quantity and in less than 8 h. The objective of this study is to
demonstrate a high PuO2 solubility in glass and to identify the rough time scale required for PuO2
dissolution in a candidate immobilization glass. The results of this study confirm that the Pu
solubility can be as high as 10 wt% in glass (11.4 wt% PuO2) and the time required for dissolution
of PuO2 in glass was less than 4 h in every case and as low as 1 to 2 h. This time requirement is
based on a single glass composition and two PuO2 source materials with similar particle size
distributions (PSD); one high-fired and one low-fired. Temperature, glass composition, and PSD
of PuO2 are suspected being the major factors in PuO2 dissolution rates in glass. Additional tests
are required to examine the effects of temperature, PSD, and glass composition on PuO2
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Vienna, J.D.; Alexander, D.L. & Li, Hong. Plutonium dioxide dissolution in glass, report, September 1, 1996; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc683917/m1/4/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.