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Determination of inorganic exchange efficiency of rubidium, cesium, and barium

The results showed that the exchange efficiency was high for both rubidium and cesium. The exchange efficiency ratios depended on the kind of inorganic compound and acid concentration. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 19, SOÁ T5- 2016 Determination of inorganic exchange efficiency of rubidium, cesium, and barium Nguyen An Son Dang Lanh Nuclear engineering Department, Dalat university (Received on 16 th March 2016, accepted on 2nd December 2016) ABSTRACT Reducing environmental pollution needs for modern life. Nowadays, the pollution levels increase with time because there are many causes and sources to affect directly the natural environment. So a necessary improvement of the environment quality would treat and reduce waste. In this paper, the inorganic exchange method was chosen. Two kinds of inorganic salts were used: ammonium phosphomolybdate n- hydrate (AMP), and ammonium phosphotungstate n-hydrate (AWP) for studying on the behavior exchange of Rb(I), Cs(I), and Ba(II). The results showed that the exchange efficiency was high for both rubidium and cesium. The exchange efficiency ratios depended on the kind of inorganic compound and acid concentration. Keywords: AMP, AWP, inorganic exchange INTRODUCTION Normally, when a nuclear power plant (NPP) operates, the material playing an important role in the heat transfer is sea water, and it usually comes to the sea again. When the sea water comes out from NPP, it brings itself a lot of metals and their compounds. Most of them are radionuclides having long half-lifes, such as cesium, iodine, cobalt, lithium, rubidium, barium, magnesium, etc. However, NPP systems are often out of their operation due to various system troubles and in the reality the quality of sea water is not enough for requirements to release on ocean. Therefore, the water treatment is necessary to improve life environment. known that acidic type resin has the high adsorption ability for many kinds of metals. Therefore, the organic compounds created from a chemical reaction were unstable hydrocarbon salts. There are many ways to reduce the radioisotope waste of water containing the radionuclides, such as reused water in .