Destruction of oxalate by reaction with hydrogen peroxide. [Hydrazine oxalate]

Technical Report · Tue Sep 01 04:00:00 EDT 1981

DOI:https://doi.org/10.2172/6229619· OSTI ID:6229619

Mailen, J. C.; Tallent, O. K.; Arwood, P. C.

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., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6229619
• Report Number(s): ORNL/TM-7474; ON: DE81030624
• Country of Publication: United States
• Language: English

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ACTINIDES
ACTIVATION ENERGY
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COPPER
DATA
DICARBOXYLIC ACIDS
ELEMENTS
ENERGY
ENERGY SOURCES
EXPERIMENTAL DATA
FUELS
HYDRAZINE
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INFORMATION
INORGANIC ACIDS
KINETICS
MATERIALS
MEDIUM TEMPERATURE
METALS
NITRIC ACID
NITROGEN COMPOUNDS
NUCLEAR FUELS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXALATES
OXALIC ACID
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
REACTION KINETICS
REACTOR MATERIALS
REPROCESSING
SCRUBBING
SEPARATION PROCESSES
SPENT FUELS
TRANSITION ELEMENTS
URANIUM