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

Technical Report · Mon Jan 09 00:00:00 EST 2012

DOI:https://doi.org/10.2172/1033340· OSTI ID:1033340

Peters, T. B. ^[1]; Washington II, A. L. ^[1]; Fink, S. D. ^[1]

---

1. Savannah River Site (SRS), Aiken, SC (United States)

The Modular Caustic Side Solvent Extraction Unit (MCU) uses the Caustic-Side Solvent Extraction (CSSX) process to remove cesium (Cs) from alkaline waste. This process involves the use of an organic extractant, BoBCalixC6,^γ in an organic matrix to selectively remove cesium from the caustic waste. The organic solvent mixture flows counter-current to the caustic aqueous waste stream within centrifugal contactors. After extracting the cesium, the loaded solvent is stripped of cesium by contact with dilute nitric acid and the cesium concentrate is transferred to the Defense Waste Processing Facility (DWPF), while the organic solvent is cleaned and recycled for further use. The Salt Waste Processing Facility (SWPF), under construction, will use the same process chemistry.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1033340
• Report Number(s): SRNL--STI-2011-00689
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CESIUM
CHEMISTRY
CONSTRUCTION
COUNTER CURRENT
EXTRACTION APPARATUSES
ISDP
MASS TRANSFER
MCU
MIXTURES
NITRIC ACID
OPTIMIZATION
ORGANIC SOLVENTS
POTASSIUM
REMOVAL
SOLVENT EXTRACTION
SOLVENTS
SWPF
TANKS
TESTING
WASTE PROCESSING
WASTES