Leachability study of modified synroc-B waste form: Effect of gamma irradiation |
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| Authors: | A. G. Solomah L. R. Zumwalt |
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| Affiliation: | North Carolina State University , P.O. Box 5995, Raleigh, N.C., 27650 |
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| Abstract: | The effects of gamma irradiation on the chemical stability and particularly the leaching behavior of Modified SYNROC-B ceramic waste form for high level radioactive waste immobilization are presented. Experimentally obtained leach rates for uranium, iron and cerium from γ-irradiated and unirradiated SYNROC-B are given. The results of the study are discussed. A decrease in pH is found with γ-irradiation due to radiolytic nitric acid generation. Higher initial leach rates with a more pronounced subsequent drop in the case of iron and cerium was observed with γ-irradiation than without irradiation. The effect of a TiO2 film and uranium leach rate behavior are also discussed. |
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| Keywords: | Molecular dynamics Electronic excitations Grazing incidence Skipping motion Molecular orbital calculations |
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