عنوان مقاله [English]
نویسندگان [English]چکیده [English]
: One of the most important safety problems and challenges of the countries having the nuclear technology is to find the methods for the treatment of the radioactive materials in the nuclear wastes. Thorium ion is one of the elements required to manage in the nuclear wastes. In this study, the modified nano-silica adsorbents with Schiff base ligands salicylaldimine propyl triethoxysilane (L1) and pyridylmethyl idenepropyl triethoxysilane (L2) were used for improvement of the thorium ions adsorption. Besides the influence of the used ligand structure, the effects of different variables such as the pH, contact time and adsorbent were investigated, and the optimum conditions were determined. The results showed that the modified adsorbent with ligand L1 provides better performance in this regard.