Centerline temperature of the U-SAP waste form for sequestration of salt waste generated from the pyrochemical process

The diameter of the cylindrical waste form must be optimized through the estimated centerline temperature for thermally stable disposal. Salt wastes generated from pyrochemical processes were dechlorinated and vitrified using a universal silica alumina phosphate (U-SAP) glass system. The thermal properties of the waste form were analyzed, and centerline temperatures were calculated based on the analyzed thermal properties to optimize the diameter. Calculation of the centerline temperature was carried out using a steady-state conduction equation in an infinitely long cylindrical waste form. In all cases, the centerline temperatures of the U-SAP below a diameter of 0.4 m were estimated to be below 480 °C.