Thermodynamics of separation of uranium from neodymium between the gallium-indium liquid alloy and the LiCl-KCl molten salt phases

• The behavior of neodymium and uranium on liquid gallium-indium eutectic alloy was carried out.
• The experiments were done in fused LiCl-KCl eutectic vs. Cl-/Cl2 reference electrode at the temperature range 723-823 K.
• Thermodynamic properties of Nd-Ga-In alloy and the separation factor U/Nd were calculated.

This work presents the electrochemical study of neodymium and uranium compounds in fused LiCl-KCl eutectic vs. Cl-/Cl2 reference electrode in the temperature range 723-823 K on liquid gallium-indium eutectic alloy. The activity, solubility and the activity coefficients of neodymium were calculated. The separation factor of uranium from neodymium on gallium-indium eutectic alloy was determined. The obtained data show the perspective of used this system in future innovation method for recovery of nuclear waste.