| 摘要 |
Method of making an ion exchange material in which a ceramic material is ion-implanted with sulfur, carbon, phosphorus, or nitrogen, which is oxidized to sulfate, carboxylate or carbonate, phosphate, or nitrate, respectively, or the nitrogen is reduced to amine or amide. Alternatively, a mixture of ceramic powder and a binder containing sulfur, carbon, phosphorus or nitrogen is heated in a non-oxidizing atmosphere to a temperature up to 1000 DEG C. The sulfur is then oxidized to sulfate, the carbon to carboxylate or carbonate, phosphorus to phosphate, and nitrogen to nitrate, or the nitrogen is reduced to amine or amide. Also a method of treating acidic aqueous solutions containing dissolved radioactive materials by passing them through an ion exchange column containing the ion exchange material made by the afore-mentioned methods. |
