Adsorption of Low-Concentrated U(VI) on a Preferable Crystalline Boehmite (γ-AlOOH) in Alkaline Conditions

Disposal Strategy of Ion-Adsorption Rare Earth Elements Low-Level Radioactive Residues: Reduction Emission and Recovery for Aluminum and Uranium by Alkaline and Alkalescent Media

“…The leaching U with average concentrations of 31 mg/L in the alkalescent medium (Figure D) was primarily attributed to the dissolution of adsorbed U(VI) species and Na 2 U 2 O 7(s) into soluble U(VI) complexes, and the main chemical transformations of U are listed in eqs and ). To mitigate the radiological hazards posed by U(VI), , U(VI) in alkalescent solution with an average concentration of 6.6 g/L Al (Figure D) could be enriched with adsorption − or precipitation , methods for the nuclear fuel materials, and the purified NaAl(OH) 4 solution could be utilized for high-value products such as γ-AlOOH. , UO 2 2 + + 3 CO 3 2 − = UO 2 false( CO 3 false) 3 4 − goodbreak0em1em⁣ K = 10 21.74 Na 2 normalU 2 normalO 7 ( s ) + 6 Na 2 CO 3 ( a ) + 3 normalH 2 normalO false( normala false) = 2 Na 4 U...…”