Process for recovering plutonium (IV) by means of crown-ether from solutions like aqueous waste solutions, concentrated solutions of fission products and concentrated solutions of plutonium

摘要

Recovery of Pu(IV) by means of crown ethers. …??According to the invention the aqueous solution containing plutonium(IV) is placed in contact with at least one crown ether, for example DCH 18C6, in solution in an organic diluent such as benzonitrile. In the case where the solution contains only traces of Pu it is possible employ a crown ether fixed on a solid phase, for example on silica. …??The aqueous solution is a concentrated solution of fission products, an effluent originating from a plant for reprocessing irradiated nuclear fuels or a concentrated solution of plutonium with americium. …IMAGE…