Synergistic extraction of trivalent actinides and lanthanides using HTTA and an AZA-crown ether
An aza-crown ether, 4,13-didecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane (K22DD) has been shown to have a synergistic effect on the extraction of trivalent lanthanides and actinides by thenoyltrifluoroacetone (HTTA). The extraction of Am(III), Cm(III), Am(III), Eu(III), Ce(III), and Pm(III) from an aqueous acetate buffer system (pH = 4.8) into HTTA/K22DD/chloroform phase was studied at 25/degrees/C. Distribution coefficients were measured as a function of HTTA concentrations, K22DD concentration, and pH user radiotracer techniques. The synergistic species was determined from these studies to be M(TTA)3 /center dot/ KSSDD. The results show that the presence of K22DD synergizes the extraction of each of the metals studied by factors of approximately 10/sup 4/-10/sup 5/. Slightly larger organic phase stability constants were measured for the trivalent actinides relative to the trivalent lanthanides.
- Research Organization:
- Tennessee Technological Univ., Cookeville (USA)
- OSTI ID:
- 5996052
- Report Number(s):
- CONF-871038-
- Journal Information:
- Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 23:12-13; ISSN SSTED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400105* -- Separation Procedures
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
ALCOHOLS
AMERICIUM
CERIUM
CURIUM
DATA
ELEMENTS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
KETONES
MEDIUM TEMPERATURE
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SOLVENTS
PH VALUE
POLYETHYLENE GLYCOLS
POLYMERS
PROMETHIUM
QUANTITY RATIO
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
SYNERGISM
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS