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2013•Hydrometallurgy of ChinaRequires access

Study on Absorption Behaviour of SiR4N for Tc(VII),Uranium,Neptunium and Plutonium

Hailin Lou

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Abstract

The absorption behaviour of SiR4N for Tc(Ⅶ) has been studied,and the effect of uranium,neptunium and plutonium on absorption Tc(Ⅶ) of SiR4N has been examined.Experimental results showed that the operation exchange capacity of SiR4N for Tc(Ⅶ) was 21.80 mg/g(dry) at the condition of nitric acid concentration of 0.55 mol/L.Under the concentration of nitric acid of 0.50 mol/L,Np(Ⅳ) and Pu(Ⅳ) could be effectively absorbed on SiR4N,while Np(Ⅴ),Np(Ⅵ) and U(Ⅵ) were not absorbed.7.0 mol/L HNO3 solution could desorb completely the Tc(Ⅶ) from loading SiR4N,and Pu(Ⅳ) and Np(Ⅳ) was not desorbed.

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The absorption behaviour of SiR4N for Tc(Ⅶ) has been studied,and the effect of uranium,neptunium and plutonium on absorption Tc(Ⅶ) of SiR4N has been examined.Experimental results showed that the operation exchange capacity of SiR4N for Tc(Ⅶ) was 21.80 mg/g(dry) at the condition of nitric acid concentration of 0.55 mol/L.Under the concentration of nitric acid of 0.50 mol/L,Np(Ⅳ) and Pu(Ⅳ) could be effectively absorbed on SiR4N,while Np(Ⅴ),Np(Ⅵ) and U(Ⅵ) were not absorbed.7.0 mol/L HNO3 solution could desorb completely the Tc(Ⅶ) from loading SiR4N,and Pu(Ⅳ) and Np(Ⅳ) was not desorbed.

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Available abstract

The absorption behaviour of SiR4N for Tc(Ⅶ) has been studied,and the effect of uranium,neptunium and plutonium on absorption Tc(Ⅶ) of SiR4N has been examined.Experimental results showed that the operation exchange capacity of SiR4N for Tc(Ⅶ) was 21.80 mg/g(dry) at the condition of nitric acid concentration of 0.55 mol/L.Under the concentration of nitric acid of 0.50 mol/L,Np(Ⅳ) and Pu(Ⅳ) could be effectively absorbed on SiR4N,while Np(Ⅴ),Np(Ⅵ) and U(Ⅵ) were not absorbed.7.0 mol/L HNO3 solution could desorb completely the Tc(Ⅶ) from loading SiR4N,and Pu(Ⅳ) and Np(Ⅳ) was not desorbed.

Key concepts: Neptunium, Nitric acid, Plutonium, Uranium, Chemistry, Desorption, Radiochemistry, Nuclear chemistry

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Study on Absorption Behaviour of SiR4N for Tc(VII),Uranium,Neptunium and Plutonium — Research Paper | ScholarLens