To separate Y(III) from a Sr(II)–Y(II) mixture, two silica-based adsorbents, CMPO/SiO 2 -P and (CMPO + Dodec)/SiO 2 -P were prepared by impregnating octyl(phenyl)-N,N-diisobutylcarbamoyl methylphosphine oxide (CMPO) extractant and a molecule modifier (1-Dodecanol) into macroporous silica/polymer composite support (SiO 2 -P). The Adsorbents showed high adsorption affinity to Y(III) and weak adsorption affinity to Sr(II) in HNO 3 solution. The amount of adsorbed Y(III) increased with the HNO 3 in the solution. The amount of adsorbed Y(III) increased with contact time and reached equilibrium within 30 min. The results showed that a pseudo-second-order kinetic model with a high correlation coefficient described the adsorption process better than other kinetic models. Successful Y(III) separation from Sr(II)–Y(III) mixture in HNO 3 solution was achieved.
|ジャーナル||Journal of Radioanalytical and Nuclear Chemistry|
|出版ステータス||Published - 2019 4月 15|
ASJC Scopus subject areas