Process for the selective recovery of americium from a nitric aqueous phase

The invention relates to a method for selectively recovering americium from a nitric aqueous phase containing americium, curium and fission products, including lanthanides and yttrium, but which is free uranium, plutonium and neptunium or that contains these three elements at trace levels. Applications: treatment and recycling of irradiated nuclear fuel, in particular for the purification americium raffinates from extraction and purification of uranium and plutonium as the PUREX processes and COEX ™.