Minerals and design of new waste forms for conditioning nuclear waste |
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Authors: | Jean-Marc Montel |
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Institution: | G2R, CNRS, École nationale supérieure de géologie, Nancy-université, BP 70239, 54056 Vandoeuvre-les-Nancy, France |
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Abstract: | Safe storage of radioactive waste is a major challenge for the nuclear industry. Mineralogy is a good basis for designing ceramics, which could eventually replace nuclear glasses. This requires a new storage concept: separation-conditioning. Basic rules of crystal chemistry allow one to select the most suitable structures and natural occurrences allow assessing the long-term performance of ceramics in a geological environment. Three criteria are of special interest: compatibility with geological environment, resistance to natural fluids, and effects of self-irradiation. If mineralogical information is efficient for predicting the behaviour of common, well-known minerals, such as zircon, monazite or apatite, more research is needed to rationalize the long-term behaviour of uncommon waste form analogs. |
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