Effort was made in this experiment for the decontamination of radioisotopes from liquid waste by means of local clays available in Korea.
The composing minerals of sample clays were studied through the X-ray diffraction and differential thermal analysis, and then those results were compared with the reduction of radioisotopes.
Samples used in this work were carried out as to the heat treatment, acid treatment, salt treatment, alkaline treatment, and were sought for the decontamination factor of Cs¹³⁷ and Sr⁸⁹, in regard to sample concentration, pH of aqueous suspension, and amount of salt ion etc.
It was found in the experiment that the optimum concentration of sample clay is 1,000 ppm and decontamination factor of actual liquid waste more than 99 %.