Scale-up and optimization of a two-stage molten salt oxidation reactor system for the treatment of cation exchange resins

► The features of the prototype MSO reactor system scaled-up from bench-scale systems were introduced. ► This study identified the proper conditions of a two-stage MSO reactor system, where each reactor performs different functions. ► The volatility of radioactive elements doped in the spent resins was investigated. ► A parametric model and experimental study for the oxidation of hydrocarbons from the primary reactor was performed.