Combined TRU-Sr extraction/recovery process
- Argonne National Lab., IL (United States)
- Northern Illinois Univ., De Kalb, IL (United States)
The combined TRU-SR extraction/recovery process is a new solvent extraction process that is designed to extract uranium, neptunium, plutonium, americium, strontium, and technetium from dissolved sludge obtained from Hanford waste storage tanks. The process utilizes a solvent formulation consisting of 0.2 M octyl(phenyl)-N,N-diisobutyl-carbainoylmethylphosphine oxide (CMPO), 0.2 M 4,4 inches (5 inches)-di-t-butylcyclohexanol8-crown-6 (DtBuCH18C6),-and 1.2 M diamyl amylphosphonate (DA[AP]) in an isoparaffinic hydrocarbon diluent. Distribution ratios of Am, Sr, and {Tc} (the least extractable constituents) from synthetic waste containing 3 M HN0{sub 3} are 40, 8, and 3, respectively. Selective backextraction of Np, Pu, Am, and Sr from U and {Tc} is achieved using a new carboxylic acid reagent. Uranium and technetium backextraction is achieved with 0.25 M Na{sub 2}CO{sub 3}. A flowsheet has been designed for testing the combined process in high speed centrifugal contactors. Synthetic dissolved sludge waste spiked with U, TRUs, {sup 85}Sr and {sup 99m}{Tc} will be used as the feed. A sufficient number of stages are utilized to remove > 99.99% of the TRUs and Sr and > 90% of the {Tc}.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10109778
- Report Number(s):
- ANL/CHM/CP-75735; CONF-930945-4; ON: DE93003979
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
ALPHA-BEARING WASTES
URANIUM
SOLVENT EXTRACTION
NEPTUNIUM
PLUTONIUM
AMERICIUM
STRONTIUM
TECHNETIUM
HANFORD RESERVATION
ORGANIC SOLVENTS
NITRIC ACID
FLOWSHEETS
EXPERIMENTAL DATA
ORGANIC PHOSPHORUS COMPOUNDS
052001
400105
WASTE PROCESSING
SEPARATION PROCEDURES