Abstract
Among various waste from RI laboratories, one of the most troublesome wastes is the spent liquid scintillation cocktail, because there are no good disposal way but to store in each laboratories. The fractionation of tritiated water, solvent and alkyl detergent from the spent scintillation cocktail by the azeotropic distillation method is examined in this study, and it has been concluded that this method is applicable. It is also found in this study that removal of tritiated water from distilled solvent can be conducted by using adsorption tower with Molecular sieve 3A. Treatment of the spent scintillation cocktail within 3 months after use is recomended because no isotope exchange reaction with solvent or detergent is observed within 3 months after use in this study. No isotope effects are observed in the azeotropic distillation process.
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