Uncertainty studies of real anode surface area in computational analysis for molten salt electrorefining

► Numerical electrochemo-fluid modeling of pyrochemical electrorefining in cross comparison with 2D and 3D analysis models. ► Benchmark study on cell potential of molten LiCl-KCl electrorefining with Mark-IV electrorefiner containing EBR-II spent fuel. ► Determination of real anode surface area profile model governing electrorefining performance. ► Identification of uncertainty factors in electrorefining causing disagreements between simulation and experiment. ► Fully transient performance analysis of 80 hours Mark-IV electrorefining with multi-species multi-reaction 1D model.