Effect of 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) on Partitioning of Np and Pu to Synthetic Boehmite
Journal Article
·
· Separation Science and Technology
OSTI ID:982830
The effect of 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) on sorption of Np(V) and Pu(V) to synthetic boehmite ({gamma}-AlOOH) was examined a function of time and pH (between 4 to 11). Sorption of both elements in boehmite suspensions (1 M NaCl, 600 mg L{sup -1} boehmite) increased with increasing pH. Sorption edges for neptunium and plutonium occurred at approximately pH 8.0 and 6.6, respectively. After steady state partitioning was reached, HEDPA was added to the neptunium-boehmite and plutonium-boehmite suspensions. Neptunium and plutonium partitioning appears to be primarily affected by the formation of soluble Np:HEDPA and Pu:HEDPA complexes, the dissolution of boehmite promoted by HEDPA, and the precipitation of Np:HEDPA and Pu:HEDPA colloids. The results are discussed in terms of applicability of HEDPA-promoted dissolution as a waste reduction method in the treatment of sludge phases contained within high-level nuclear waste storage tanks.
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- Chemical Sciences Division
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 982830
- Report Number(s):
- LBNL-1911E
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
Similar Records
Behavior of Uranium(VI) during HEDPA Leaching for AluminumDissolution in Tank Waste Sludges
Examination of Uranium(VI) Leaching During Ligand Promoted Dissolution of Waste Tank Sludge Surrogates
Metal surface decontamination using 1-hydroxyethane-1,1-diphosphonic acid
Conference
·
Tue Jan 03 23:00:00 EST 2006
·
OSTI ID:883111
Examination of Uranium(VI) Leaching During Ligand Promoted Dissolution of Waste Tank Sludge Surrogates
Journal Article
·
Tue Jun 10 00:00:00 EDT 2008
· Separation Science and Technology
·
OSTI ID:934714
Metal surface decontamination using 1-hydroxyethane-1,1-diphosphonic acid
Journal Article
·
Mon May 01 00:00:00 EDT 2000
· Nuclear Technology
·
OSTI ID:20030426