Thermodynamic properties of actinides and fission products in liquid bismuth

Highlights: • Correlations of solubility and activity coefficients of actinides and rare earth metals in liquid bismuth. • Applications of liquid bismuth in pyroprocessing and system cleanup of molten salt reactors. • Bi–actinide/rare earth metal binary alloys. - Abstract: A critical review on the fundamental properties (solubility, activity coefficients and stable metallic compounds) of actinides and rare earth fission products in liquid bismuth is conducted in this study. The available data are summarized and analyzed. New temperature-dependent correlations, which extend the available data to a broader range of applications, are developed based on existing data from different sources when multiple measurements are available. Analysis of the data shows the strong correlations between some properties (solubility and activity coefficients) and the atomic numbers of the elements.