Separation by solvent extraction

Details Separation by solvent extraction Separation by solvent extraction

1950-07-24

1976-04-06

Padgett, Benjamin R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 9, 423 10, B01D 1104

Patent

active

039490483

ABSTRACT:
17. A process for separating fission product values from uranium and plutonium values contained in an aqueous solution, comprising adding an oxidizing agent to said solution to secure uranium and plutonium in their hexavalent state; contacting said aqueous solution with a substantially water-immiscible organic solvent while agitating and maintaining the temperature at from -1.degree. to -2.degree. C. until the major part of the water present is frozen; continuously separating a solid ice phase as it is formed; separating a remaining aqueous liquid phase containing fission product values and a solvent phase containing plutonium and uranium values from each other; melting at least the last obtained part of said ice phase and adding it to said separated liquid phase; and treating the resulting liquid with a new supply of solvent whereby it is practically depleted of uranium and plutonium.

REFERENCES:
patent: 925820 (1909-06-01), Monti
patent: 2227833 (1941-01-01), Hixson et al.

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