Diphosphonic acid complexants for improved separation efficiency of transuranic elements
A study was made of the thermodynamics of protonation and complexation of Eu(III), Th(IV), and U(VI) by a series of simple diphosphonic acid chelating agents to assess the potential for application in actinide waste processing. It was found that the strongest complexes are formed with ligands having two phosphonate binding groups on the same C atom (1,1-diphosphonates) and that the water-soluble complexes are formed with protonated ligand species. More efficient separation/recovery processes could be designed using these ligands.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10174854
- Report Number(s):
- ANL/CHM/PP--79348; ON: DE94016887
- Country of Publication:
- United States
- Language:
- English
Similar Records
Actinide phosphonate complexes in aqueous solutions
Stability constants of europium complexes with a nitrogen heterocycle substituted methane-1,1-diphosphonic acid
f-element complexation by diphosphonate ligands.
Conference
·
Fri Oct 01 00:00:00 EDT 1993
·
OSTI ID:10188476
Stability constants of europium complexes with a nitrogen heterocycle substituted methane-1,1-diphosphonic acid
Conference
·
Sat Jun 01 00:00:00 EDT 1996
·
OSTI ID:242692
f-element complexation by diphosphonate ligands.
Journal Article
·
Tue Dec 31 23:00:00 EST 1996
· J. Alloys Compd.
·
OSTI ID:942341
Related Subjects
052001
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105
CHELATING AGENTS
FEASIBILITY STUDIES
LIGANDS
PHOSPHONIC ACID ESTERS
RADIOACTIVE WASTE PROCESSING
SEPARATION PROCEDURES
SEPARATION PROCESSES
SOLVENT EXTRACTION
TRANSURANIUM ELEMENTS
USES
WASTE PROCESSING
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105
CHELATING AGENTS
FEASIBILITY STUDIES
LIGANDS
PHOSPHONIC ACID ESTERS
RADIOACTIVE WASTE PROCESSING
SEPARATION PROCEDURES
SEPARATION PROCESSES
SOLVENT EXTRACTION
TRANSURANIUM ELEMENTS
USES
WASTE PROCESSING