abstract |
The present invention provides a novel method capable of easily removing ammonia and its reaction product from radioactive waste liquid and stabilizing the waste liquid. At least one of ammonia, ammonium salt and amine contained in a radioactive liquid waste is oxidized to be converted into at least one of nitric acid, nitrous acid, nitrate ion and nitrite ion. Next, after the conversion, the radioactive liquid waste and cement are mixed and solidified. [Selection] Figure 1 |