Search - Number 26 - SORPTION-COAGULATION TREATMENT OF LIQUID RADIOACTIVE WASTE URANIUM AND TRANSURANIUM ELEMENTS

SORPTION-COAGULATION TREATMENT OF LIQUID RADIOACTIVE WASTE URANIUM AND TRANSURANIUM ELEMENTS
Cover not present SORPTION-COAGULATION TREATMENT OF LIQUID RADIOACTIVE WASTE URANIUM AND TRANSURANIUM ELEMENTS
Category: Number 26
Publication: 26
Summary

This work addresses the sorption of uranium and transuranium element (TUE) microquantities  from liquid radioactive wastes (LRW) of complex salt composition by sorbents on the basis of amorphous spherically granulated titanium and zirconium phosphates, as well as hemicrystalline silicotitanates and silicozirconates of  alkaline metals. Uranium and TUE were retrieved from LRW by coagulation method. It is demonstrated that europium and americium are, practically, bond by coagulates, and uranium content decreases in 10 and more times. Final treatment of filtrate after coagulation was made with using sorption through the columns filled by individual sorbents and by their combination. The sorbents were tested by way of retrieving plutonium and americium from model solutions containing chlorides, sulphates and bicarbonates of alkaline and alkali-earth metals, and from uranium – from strong-acid solutions (3 mole/dm HNO3) with using indicator marks corresponding to radionuclides. It was stated that TiSi-ВS sample is highly selective in relation to 241Am, 239Pu radionuclides and uranium ions.

Keywords: sorbents inorganic, liquid radioactive waste, uranium, transuranium element.

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