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Title: Nitric acid recovery from waste solutions

Abstract

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.

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

Citation Formats

Wilson, A. S. Nitric acid recovery from waste solutions. United States: N. p., 1959. Web.
Wilson, A. S. Nitric acid recovery from waste solutions. United States.
Wilson, A. S. Tue . "Nitric acid recovery from waste solutions". United States. https://www.osti.gov/servlets/purl/4215794.
@article{osti_4215794,
title = {Nitric acid recovery from waste solutions},
author = {Wilson, A. S.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {4}
}

Patent:

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