Studies on Separation of Fission Product by Flotation Method

—Separation of ¹³⁷Cs—

Abstract

Flotation has proven to be effective in removing ¹³⁷Cs from its aqueous dilute solution, with the aid of suitable coprecipitant such as cupric or nickel ferrocyanide and pertinent collector such as sodium oleate and octadecylamine acetate. It has been found in the experiments on single stage flotation that 90-99% of ¹³⁷Cs can be removed by optimum choice of the concentrations of coprecipitant and collector, as well as of pH of flotation medium.
Multiple flotation for four successive stages gave decontamination factor of 10₄ to 10₆ with a volume reduction ratio of higher than 50.