The use of ion-exchange resins for the treatment of radioactive wastes has many advantages, but thes eare rather expensive as compared with the Korean vermiculite. The Korean vermiculite has slightly different chemical constituents from the ones produced in other countries, and its physical properties
might be applicable to the management of radioactive waste´ in a small nuclear installation. The decontaminating effect of Korean vermiculite for the low-level radioactive liquid was investigated. 106Ru, 8OSr, and 13"?Cs were utilized for the experiments. The removal rates by Korean vermiculite were calculated for
106Ru, 9OSr and 137Cs and the removal rates increased as the weight of vermiculite in the exchange column increased.
The decontaminating constants, KJ, of, the Korean vermiculite for 10GRu, 8OSr and 137Cs were 2.7,
69.3 and 263 ml/g respectively. Through the results of experiments, the application of Korean vermiculite column to the treatment of low-level radioactive waste is quite feasible.
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