Results of the Extraction-Scrub-Strip Testing Using an Improved Solvent Formulation and Salt Waste Processing Facility Simulated Waste

摘要

The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent also known as the next generation solvent (NGS) for deployment at the Savannah River Site to remove cesium from High Level Waste. The technical effort is a collaborative effort between Oak Ridge National Laboratory (ORNL) and Savannah River National Laboratory (SRNL). As part of the program, the Savannah River National Laboratory (SRNL) has performed a number of Extraction-Scrub-Strip (ESS) tests. These batch contact tests serve as first indicators of the cesium mass transfer solvent performance with actual or simulated waste. The test detailed in this report used simulated Tank 49H material, with the addition of extra potassium. The potassium was added at 1677 mg/L, the maximum projected (i.e., a worst case feed scenario) value for the Salt Waste Processing Facility (SWPF).