Process for recovery of palladium from nuclear fuel reprocessing wastes

Patent · Wed Dec 31 23:00:00 EST 1980

OSTI ID:863993

Campbell, David O ^[1]; Buxton, Samuel R ^[2]

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1. Oak Ridge, TN
2. Wartburg, TN

Palladium is selectively removed from spent nuclear fuel reprocessing waste by adding sugar to a strong nitric acid solution of the waste to partially denitrate the solution and cause formation of an insoluble palladium compound. The process includes the steps of: (a) adjusting the nitric acid content of the starting solution to about 10 M, (b) adding 50% sucrose solution in an amount sufficient to effect the precipitation of the palladium compound, (c) heating the solution at reflux temperature until precipitation is complete, and (d) centrifuging the solution to separate the precipitated palladium compound from the supernatant liquid.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4290967
• OSTI ID: 863993
• Country of Publication: United States
• Language: English

Related Subjects

/999/423/976/
10
50
acid
acid solution
adding
adjusting
amount
amount sufficient
centrifuging
complete
compound
content
denitrate
effect
formation
fuel
fuel reprocessing
heating
insoluble
liquid
nitric
nitric acid
nuclear
nuclear fuel
palladium
partially
precipitated
precipitation
process
processing waste
recovery
reflux
removed
reprocessing
reprocessing waste
reprocessing wastes
selectively
selectively remove
selectively removed
separate
solution
spent
spent nuclear
starting
steps
strong
strong nitric
sucrose
sufficient
sugar
supernatant
supernatant liquid
temperature
waste
wastes