Method for regenerating spent solvent generated from nuclear fue

Details Method for regenerating spent solvent generated from nuclear fue Method for regenerating spent solvent generated from nuclear fue

1992-06-30

1995-07-04

Walsh, Donald P.

Hazardous or toxic waste destruction or containment

Destruction or containment of radioactive waste

Treating radioactive liquid

210634, 210906, 208 18, G21F 900

Patent

active

054302269

ABSTRACT:
A method for regenerating a spent solvent generated from a nuclear fuel cycle and containing a higher hydrocarbon (n-dodecane), tributyl phosphate and degradation products thereof. The spent solvent is brought into contact with a methanol/water mixture having a water concentration of 100 to 750 g/l and the resulting mixture is subjected to phase separation to form a non-methanol/water phase and a methanol/water phase. The degradation products such as DBP in the spent solvent selectively migrate into the methanol/water phase and n-dodecane and TBP can be recovered as the non-methanol/water phase.

REFERENCES:
patent: 4595529 (1986-06-01), Neace
patent: 5171144 (1992-12-01), Kondho et al.
71-Nuclear Technology, vol. 92, No. 14, 118164j.
Chemical Abstracts, vol. 101, No. 22, 195894d.

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