Application of inorganic sorbents for removal of Cs, Sr, Pu and Am from contaminated solutions

A sorption ability of titanium silicates (TiSi) and iron oxides towards Cs, Sr, Pu and Am was tested using the laboratory batch method. The obtained results are expressed as distribution coefficients (K d ). TiSi synthesised using TiOSO 4 revealed better sorption ability towards all studied radionuclides in comparison with TiSi produced on the basis of TiCl 4 . The K d values ranged from 3.9 × 10 2 to 1.6 × 10 5 mL g −1 for Sr, from 6 to 4.1 × 10 4 mL g −1 for Cs, from 2.2 × 10 2 to 2.6 × 10 5 mL g −1 for Pu and from 50 to 1.6 × 10 4 mL g −1 for Am. The highest Pu K d values (9 × 10 3 –6.2 × 10 4 mL g −1 ) and better kinetics were found for iron oxides.