Nitric acid recovery from waste solutions

Patent · Tue Apr 14 00:00:00 EST 1959

OSTI ID:4215794

Wilson, A. S.

The recovery of nitric acid from aqueous nitrate solutions containing fission products as impurities is described. It is desirable to subject such solutions to concentration by evaporation since nitric acid is regenerated thereby. A difficulty, however, is that the highly radioactive fission product ruthenium is volatilized together with the nitric acid. It has been found that by adding nitrous acid, ruthenium volatilization is suppressed and reduced to a negligible degree so that the distillate obtained is practically free of ruthenium.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-022046
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): 2,882,129
• OSTI ID: 4215794
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: United States
• Language: English

Related Subjects

CHEMISTRY
CHEMICAL REACTIONS
CHEMICALS
DISTILLATION
ENRICHMENT
EVAPORATION
FISSION PRODUCTS
IMPURITIES
MINERAL ACIDS
MIXING
NITRATES
NITRIC ACID
NITROGEN COMPOUNDS
NITROUS ACID
OPERATION
OXYGEN COMPOUNDS
PATENT
PERFORMANCE
RADIATION DOSES
RADIOACTIVITY
RECOVERY
REDUCTION
RUTHENIUM COMPOUNDS
SOLUTIONS
VOLATILITY
WASTE PROCESSING
WASTE SOLUTIONS
WATER