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This paper deals with concept design and assessment of a process for the recovery of isotopically modified molybdenum from irradiated nuclear CerMet fuels containing the transuranium element (TRU) oxides in a metallic molybdenum matrix. The recovery of isotopically modified Mo should enable re-use of this valuable resource especially in the case of uranium-free fuels/targets for Accelerator-Driven Transmuters (ADT). The process concept proposed is a modification of the standard hydrometallurgical way of molybdenum processing. Further, the most significant expected radionuclidic impurities in the molybdate raffinate were predicted. Separation of these impurities from the concentrated molybdate solution will be described in the following parts of this miniseries.

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