Method for separating plutonium and uranium from fission products using crown ethers, in the first stages of treating irradiated nuclear fuel.

摘要

Process for separating Pu from U and from fission products by means of crown ethers. …According to this process the aqueous solution A0 containing Pu, U and the fission products, for example a solution originating from the first cycle of reprocessing of irradiated nuclear fuels, is placed in contact with an organic solvent O0 comprising at least one crown ether, and the U is then reextracted with water or with a nitric aqueous solution and finally the Pu is recovered by reextraction, for example into an aqueous solution of H2SO4. ……