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Title: Plutonium dissolution process

Abstract

A two-step process for dissolving Pu metal is disclosed in which two steps can be carried out sequentially or simultaneously. Pu metal is exposed to a first mixture of 1.0-1.67 M sulfamic acid and 0.0025-0.1 M fluoride, the mixture having been heated to 45-70 C. The mixture will dissolve a first portion of the Pu metal but leave a portion of the Pu in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alternatively, nitric acid between 0.05 and 0.067 M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution is diluted with nitrogen.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
208312
Patent Number(s):
-US-A8193380
Application Number:
ON: DE96006453; PAN: 8-193,380; TRN: 96:009337
Assignee:
Dept. of Energ SRS; SCA: 050800; 400105; PA: EDB-96:063362; NTS-96:012841; SN: 96001550304
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 1994
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; 40 CHEMISTRY; PLUTONIUM; DISSOLUTION; MATERIALS RECOVERY

Citation Formats

Vest, M.A., Fink, S.D., Karraker, D.G., Moore, E.N., and Holcomb, H.P. Plutonium dissolution process. United States: N. p., 1994. Web.
Vest, M.A., Fink, S.D., Karraker, D.G., Moore, E.N., & Holcomb, H.P. Plutonium dissolution process. United States.
Vest, M.A., Fink, S.D., Karraker, D.G., Moore, E.N., and Holcomb, H.P. Sat . "Plutonium dissolution process". United States. https://www.osti.gov/servlets/purl/208312.
@article{osti_208312,
title = {Plutonium dissolution process},
author = {Vest, M.A. and Fink, S.D. and Karraker, D.G. and Moore, E.N. and Holcomb, H.P.},
abstractNote = {A two-step process for dissolving Pu metal is disclosed in which two steps can be carried out sequentially or simultaneously. Pu metal is exposed to a first mixture of 1.0-1.67 M sulfamic acid and 0.0025-0.1 M fluoride, the mixture having been heated to 45-70 C. The mixture will dissolve a first portion of the Pu metal but leave a portion of the Pu in an oxide residue. Then, a mineral acid and additional fluoride are added to dissolve the residue. Alternatively, nitric acid between 0.05 and 0.067 M is added to the first mixture to dissolve the residue as it is produced. Hydrogen released during the dissolution is diluted with nitrogen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}