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Title: LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS

Abstract

A method is described for reducing the chloride content of a solution derived from the dissolution of a stainless steel clad nuclear fuel element with an aqua regia dissolution medium. The solutlon is adjusted to a nitric acid concentration in the range 5 to 10 M and is countercurrently contacted at room temperature with a gaseous oxide of nitrogen selected from NO, NO/sub 2/, N/sub 2/ O/sub 3/, and N/sub 2/O/sub 4/. Chlo ride is recovered from the contacted solution as nitrosyl chloride. After reduction of the chloride content, the solution is then contacted with gaseous NO to reduce the nitric acid molarity to a desired level. (AEC)

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4737980
Patent Number(s):
3075825
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-17-008272
NSA Number:
NSA-17-008272
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; AIR; AQUA REGIA; ATOMIC MODELS; BURNUP; CHLORIDES; COMPRESSORS; COOLANT LOOPS; COUNTER CURRENT; DECOMPOSITION; DIAGRAMS; DOSEMETERS; ECONOMICS; EFFICIENCY; EL-2; FABRICATION; FUEL CANS; G1; GAMMA RADIATION; GAS COOLANT; GASES; GRAPHITE MODERATOR; HEAVY WATER MODERATOR; HYDROCHLORIC ACID; INFRARED RADIATION; LOW TEMPERATURE; MATERIALS TESTING; MEASURED VALUES; MOLECULES; NATURAL URANIUM FUEL; NITRATES; NITRIC ACID; NITROGEN OXIDES; PLUTONIUM; POLYETHYLENES; POWER; POWER PLANTS; PRESSURE; PRODUCTION; RADIATION DOSES; RECOVERY; REPROCESSING; SOLUTIONS; SPECTRA; STAINLESS STEELS; WATER

Citation Formats

Savolainen, J.E. LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS. United States: N. p., 1963. Web.
Savolainen, J.E. LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS. United States.
Savolainen, J.E. Tue . "LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS". United States.
@article{osti_4737980,
title = {LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS},
author = {Savolainen, J.E.},
abstractNote = {A method is described for reducing the chloride content of a solution derived from the dissolution of a stainless steel clad nuclear fuel element with an aqua regia dissolution medium. The solutlon is adjusted to a nitric acid concentration in the range 5 to 10 M and is countercurrently contacted at room temperature with a gaseous oxide of nitrogen selected from NO, NO/sub 2/, N/sub 2/ O/sub 3/, and N/sub 2/O/sub 4/. Chlo ride is recovered from the contacted solution as nitrosyl chloride. After reduction of the chloride content, the solution is then contacted with gaseous NO to reduce the nitric acid molarity to a desired level. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1963},
month = {1}
}