Retention of some hazardous radionuclides from nitric acid solution using tin(IV) antimonate as a cation exchanger
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M.I. El-Dessouky
The removal of some hazardous radioactive nuclides such as Cs+, Co2+, Sr2+ and/or Eu3+ from radioactive liquid waste was carried out either by chemical in-situ precipitation or by using a preformed precipitate of tin(IV) antimonate (SnSb). Stability of the product material for the chemical reagents was investigated at various concentrations of nitric and hydrochloric acids. Capacity and selectivity patterns for Cs+, Co2+, Sr2+ and Eu3+ were determined on these matrices. Conditioning of the exhausted tin(IV) antimonate in cement matrix was carried out with the study of some important parameters affecting the properties of the solidified waste forms such as, the compressive strength and the leaching coefficient of these nuclides from the solidified waste form. The leaching coefficient of radioactive nuclides precipitated in-situ with SnSb are smaller than those adsorbed on SnSb or plain ordinary portland cement.
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Artikel in diesem Heft
- Formation of americium(III) complexes with aqueous silicic acid
- The reduction of plutonium and neptunium ions by acetaldoxime in nitric acid
- Complex formation of U(VI) with Bacillus-isolates from a uranium mining waste pile
- Longterm leaching of natural radionuclides from uranium mill tailings material: comparison of indoor and outdoor column experiments
- Enrichment analysis of uranium in uranium oxide by gamma-ray spectrometry without using calibration standards
- Gas phase chemistry of technetium and rhenium oxychlorides
- Synthesis and chromatographic characterization of [Tc-99m]technetium-humic acid species
- Retention of some hazardous radionuclides from nitric acid solution using tin(IV) antimonate as a cation exchanger
- Study of adsorption of zinc ions on hydrous zirconium oxide surface
- Radiometric analysis of the spent fuel pool water and reactor coolant of ET-RR.1
- Separation of carrier-free cerium radionuclides from different target matrix produced by heavy ion beams
