METHOD OF SEPARATING ELEMENTS FROM WATER SOLUTIONS GAINED BY REGENERATION OF BURNED-UP OF NUCLEAR FUEL

摘要

Process for isolating at least one element such as Nb, Sb, Ce+Pr, the actinides and the elements of groups VIIb and VIII of the Periodic Classification of the elements from aqueous solutions originating from the reprocessing of spent nuclear fuels. This process consists in bringing the said aqueous solution into contact with a solid resin based on vinylpyridine polymer or copolymer and in separating from the said solution the resin which has bound the said element(s). The resin is in particular a crosslinked poly(4-vinylpyridine) powder and the isolated elements are, for example, ruthenium, rhodium, palladium, technetium, manganese, cobalt, iron, nickel, cerium and praseodymium.