Modular Caustic Side Solvent Extraction (MCU) Improved Solvent TestingCX(s) Applied: B3.6Date: 08/02/2011Location(s): Aiken, South CarolinaOffice(s): Savannah River Operations Office
Office of NEPA Policy and Compliance
August 2, 2011
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CX(s) Applied: B3.6
Date: 08/02/2011
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 (SRNL) 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) (see Evaluation Checklist, TC-A-2005-045). The new solvent may also require a new acid stripping agent, which is boric acid (as opposed to nitric acid). Finally, the suppressor is changed from trioctlamine to a guanidine derivative. 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 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 3 gallons of organic solvent and 20 gallons of or tank waste will be required over the life of the work.