Extraction of Am(III) and Eu(III) from aqueous ammonium thiocyanate by dihexyl-N,N-diethylcarbamolymethylphosphonate and related compounds
Journal Article
·
· Sep. Sci. Technol.; (United States)
The extraction behavior and separation factors of Am(III) and Eu(III) from low acid ammonium thiocyanate solutions were studied using dihexyl-N,N-diethylcarbamoylmethylphosphonate (DHDECMP) and related compounds. It was found that very dilute (<0.1 M) solutions of ammonium thiocyanate were sufficient to allow quantitative extraction of Am(III) with DHDECMP. Significant differences between DHDECMP and dibutylbutylphosphonate (DB(BP)) in the extraction of Am(III) and Eu(III) from thiocyanate were found and indicate chelation is occurring with DHDECMP, unlike the situation in the low acid lithium nitrate system. Infrared spectroscopy of the extracted complexes of La(III) and extraction studies with dihexyl-N,N-diethylcarbamoylethylphosphonate (DHDECEP), dihexyl-N,N-diisobutylcarbamoylmethylphosphonate (DHDIBCMP), and di-(2-ethylbutyl)-N,N-diethylcarbamoylmethylphosphonate (DEBDECMP) confirm that chelation occurs with thiocyanate complexes of Am(III) and Eu(III). Separation factors, ..cap alpha.., for Am(III) and Eu(III) were the lowest with DB(BP) (..cap alpha.. = 5.84) and the highest with DHDIBCMP (..cap alpha.. = 10.8).
- Research Organization:
- Argonne National Lab., IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5065967
- Journal Information:
- Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 17:6; ISSN SSTED
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Fri May 01 00:00:00 EDT 1981
· Sep. Sci. Technol.; (United States)
·
OSTI ID:6177838
Extraction of Th(IV) and U(VI) by dihexyl-N,N-diethylcarbamoylmethylphosphonate from aqueous nitrate media
Journal Article
·
Fri May 01 00:00:00 EDT 1981
· Sep. Sci. Technol.; (United States)
·
OSTI ID:6370558
Extraction of Am(III) and Fe(III) by selected dihexyl N,N-dialkylcarbamoylmethyl-phosphonates, -phosphinates and -phospine oxides from nitrate media
Conference
·
Wed Dec 31 23:00:00 EST 1980
· Sep. Sci. Technol.; (United States)
·
OSTI ID:5619865
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
AMERICIUM
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
CARBONIC ACID DERIVATIVES
CHELATES
COMPLEXES
CYANATES
DATA
DHDECMP
DISPERSIONS
ELEMENTS
ESTERS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
INFORMATION
LANTHANUM
METALS
MIXTURES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOSPHONIC ACID ESTERS
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
400105* -- Separation Procedures
ACTINIDES
AMERICIUM
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
CARBONIC ACID DERIVATIVES
CHELATES
COMPLEXES
CYANATES
DATA
DHDECMP
DISPERSIONS
ELEMENTS
ESTERS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
INFORMATION
LANTHANUM
METALS
MIXTURES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOSPHONIC ACID ESTERS
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS