Certain characteristic features of the influence of impurities on the extraction of transplutonium and rare earth elements by di-(2-ethylhexyl)phosphoric acid solutions

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5630307

Kovantseva, S N; Filimov, V T; Kasimova, V A; Nikolaev, V M

The extraction of quantitative amounts of aluminum, zirconium, and iron from citric acid solutions of di-(2-ethylhexyl)phosphoric acid in decane is performed in the presence of isooctanol. The study was made in the concentration ranges of from 7.4 X 10/sup -3/ to 2.23 X 10/sup -1/ mole/liter of aluminum, from 1.1 X 10/sup -3/ to 5.5 X 10/sup -2/ mole/liter of zirconium, and from 1.79 X 10/sup -5/ to 1.79 X 10/sup -2/ mole/liter of iron. It was found that the extraction of aluminum, zirconium, and iron proceeds by a cation exchange mechanism with the formation of compounds ZrA/sub 4/ X 2HA, FeA/sub 3/ X (2n-3)HA and A1A/sub 3/ X (2n-3)HA. It was shown that the presence of aluminum and zirconium in the extraction system changes the distribution coefficients of curium, californium, and europium, but practically does not influence their separation.

• OSTI ID: 5630307
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 27:3; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400105* -- Separation Procedures
400703 -- Radiochemistry & Nuclear Chemistry-- Radioisotope Production
ACTINIDES
ALUMINIUM
ALUMINIUM COMPLEXES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALIFORNIUM
CARBOXYLIC ACIDS
CITRIC ACID
COMPLEXES
CURIUM
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ESTERS
EUROPIUM 152
EUROPIUM ISOTOPES
EXTRACTION
HDEHP
HOURS LIVING RADIOISOTOPES
HYDROXY ACIDS
IMPURITIES
INTERMEDIATE MASS NUCLEI
ION EXCHANGE
IRON
IRON COMPLEXES
ISOTOPE SEPARATION
ISOTOPES
METALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
PHOSPHORIC ACID ESTERS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
YEARS LIVING RADIOISOTOPES
ZIRCONIUM
ZIRCONIUM COMPLEXES