Modular Caustic Side Solvent Extraction (MCU) Improved Solvent TestingCX(s) Applied: B3.6Date: 08/09/2010Location(s): Aiken, South CarolinaOffice(s): Savannah River Operations Office
Office of NEPA Policy and Compliance
August 9, 2010
Estimated Read Time min
CX(s) Applied: B3.6
Date: 08/09/2010
Location(s): Aiken, South Carolina
Office(s): Savannah River Operations Office
In support of the Modular Caustic Side Solvent Extraction Unit (MCU), Savannah River National Laboratory will be investigating the properties of a new organic solvent blend. The new blend will contain a new extractant (MAXCalix) which has physical properties very similar to the current extractant (BoBCalix). The new solvent may also require a new acid stripping agent, which is likely to be boric acid (as opposed to nitric acid). Finally, the suppressor may be changed from trioctlamine to a guanidine or similar species. In no case do the changes from the current solvent blend represent a knowledge gap or the introduction of dangerous new chemicals. As part of the testing, SRNL will be using caustic salt simulants, tank waste samples (identity to be determined), as well as organic (combustible, not flammable) liquids. An existing disposal path for each of these streams exists now, and no special requirements are needed for disposal. We estimate that 5 gallons of organic solvent, 10 gallons of tank waste, and 5 gallons of caustic salt simulant will be required.