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AssigneeForschungszentrum Juelich GmbH
InventorsWerner F. Lensa, Dirk Vulpius, Hans-Juergen Steinmetz, Kathrin Baginski, Rahim Nabbi
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Methods for partially decontaminating radioactive waste wherein the waste is first mixed, or brought in contact, with at least one corrosive medium. Activation energy is then supplied to the corrosive medium, so that at least a portion of the radionuclide present in the waste is converted into at least one gaseous reaction product, or is dissolved, by hydrogen or hydrogen ions, oxygen or oxygen ions, and/or halogen (for example chlorine) or halogen ions from the corrosive medium. The aim is that of decontaminating a 12C/13C-containing porous solid waste, which is contaminated with the 14C radionuclide. For this purpose, CO2 and/or hydrogen are applied as corrosive media to the waste, so that at least a portion of the waste is reacted to form at least one gaseous reaction product, wherein the process temperature is selected so that the 14C radionuclide is enriched in the reaction product over 12C/13C.
A method for at least partially decontaminating solid waste that is contaminated with at least one radionuclide, wherein waste having a matrix made of non-radioactive base material is selected, in which the radionuclide is embedded, wherein:
3-5. (canceled)
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13-14. (canceled)
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A method for decontaminating a 12C/13C-containing porous solid waste, which is contaminated with the 14C radionuclide, wherein CO2 is applied as corrosive medium to the waste, so that at least a portion of the waste is reacted to form at least one gaseous reaction product, wherein the process temperature is selected so that the radionuclide is enriched in the reaction product over 12C/13C.
Dependencies are inferred from the claim text.