A. Yu. Romanchuk, N. N. Gracheva, K. I. Bryukhanova, I. F. Seregina, A. L. Trigub, K. S. Gavrichev, S. N. Kalmykov, “Sorption behavior and speciation of Am<sup>III</sup> in orthophosphates of rare-earth elements”, Mendeleev Commun., 2018, Volume 28, Issue 3,Pages <nobr>303

This article is cited in 7 papers

Communications

Sorption behavior and speciation of Am^III in orthophosphates of rare-earth elements

A. Yu. Romanchuk^a, N. N. Gracheva^a, K. I. Bryukhanova^b, I. F. Seregina^a, A. L. Trigub^c, K. S. Gavrichev^b, S. N. Kalmykov^a

^a Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
^b N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
^c National Research Centre 'Kurchatov Institute', Moscow, Russian Federation

Abstract: It has been found that leaching of Am^III from the surface after the sorption is characterized by slow kinetics; over 10 days are required to reach a dynamic equilibrium in the system. The leaching process is accompanied by the formation of Am-containing phosphate phase on the sorbent surface. Annealing the sample at 400°C for 5h after sorption results in incorporation of the sorbed cation into the sorbent structure, which allows subsequent leaching to be reduced considerably.

Language: English

DOI: 10.1016/j.mencom.2018.05.025