Destruction of oxalate by reaction with hydrogen peroxide. [Hydrazine oxalate]
The destruction of oxalate by oxidation to carbon dioxide using hydrogen peroxide was studied as an alternative method for the disposal of oxalate in connection with the possible use of an aqueous hydrazine oxalate solution as a scrubbing agent for solvent cleanup in processes for the recovery of uranium, plutonium, and thorium by solvent extraction. The rate of oxidation of oxalate by hydrogen peroxide in acid solution at the reflux temperature was adequate for process application; reaction half-times at 100/sup 0/C were less than one hour when the hydrogen peroxide concentration was greater than 0.5 M. The reaction was first order with respect to both the oxalate and hydrogen peroxide concentrations and had an activation energy of 58.7 kJ/g-mol. The rate increased with the hydrogen ion concentration as (H/sup +/)/sup 0/ /sup 3/ but was not significantly affected by the presence of 100 ppM of uranium or copper in solution. In the near-neutral hydrazine oxalate solutions, the reaction of either component with hydrogen peroxide was too slow for process application.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6229619
- Report Number(s):
- ORNL/TM-7474; ON: DE81030624; TRN: 81-017343
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
HYDROGEN PEROXIDE
CHEMICAL REACTION KINETICS
OXALATES
ACTIVATION ENERGY
CARBON DIOXIDE
COPPER
EXPERIMENTAL DATA
HYDRAZINE
MEDIUM TEMPERATURE
NITRIC ACID
OXALIC ACID
OXIDATION
REPROCESSING
SCRUBBING
SPENT FUELS
URANIUM
ACTINIDES
CARBON COMPOUNDS
CARBON OXIDES
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DICARBOXYLIC ACIDS
ELEMENTS
ENERGY
ENERGY SOURCES
FUELS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
KINETICS
MATERIALS
METALS
NITROGEN COMPOUNDS
NUCLEAR FUELS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
REACTION KINETICS
REACTOR MATERIALS
SEPARATION PROCESSES
TRANSITION ELEMENTS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
050800 - Nuclear Fuels- Spent Fuels Reprocessing