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Title: Decontamination of metals using chemical etching

Abstract

The invention relates to chemical etching process for reclaiming contaminated equipment wherein a reduction-oxidation system is included in a solution of nitric acid to contact the metal to be decontaminated and effect reduction of the reduction-oxidation system, and includes disposing a pair of electrodes in the reduced solution to permit passage of an electrical current between said electrodes and effect oxidation of the reduction-oxidation system to thereby regenerate the solution and provide decontaminated equipment that is essentially radioactive contamination-free.

Inventors:
 [1];  [2]
  1. Kennewick, WA
  2. Richland, WA
Issue Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (United States)
OSTI Identifier:
863631
Patent Number(s):
4217192
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23G - CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
DOE Contract Number:  
EY-76-C-14-2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
decontamination; metals; chemical; etching; relates; process; reclaiming; contaminated; equipment; reduction-oxidation; included; solution; nitric; acid; contact; metal; decontaminated; effect; reduction; disposing; pair; electrodes; reduced; permit; passage; electrical; current; oxidation; regenerate; provide; essentially; radioactive; contamination-free; etching process; chemical etching; nitric acid; electrical current; radioactive contamination; /205/134/376/976/

Citation Formats

Lerch, Ronald E, and Partridge, Jerry A. Decontamination of metals using chemical etching. United States: N. p., 1980. Web.
Lerch, Ronald E, & Partridge, Jerry A. Decontamination of metals using chemical etching. United States.
Lerch, Ronald E, and Partridge, Jerry A. Tue . "Decontamination of metals using chemical etching". United States. https://www.osti.gov/servlets/purl/863631.
@article{osti_863631,
title = {Decontamination of metals using chemical etching},
author = {Lerch, Ronald E and Partridge, Jerry A},
abstractNote = {The invention relates to chemical etching process for reclaiming contaminated equipment wherein a reduction-oxidation system is included in a solution of nitric acid to contact the metal to be decontaminated and effect reduction of the reduction-oxidation system, and includes disposing a pair of electrodes in the reduced solution to permit passage of an electrical current between said electrodes and effect oxidation of the reduction-oxidation system to thereby regenerate the solution and provide decontaminated equipment that is essentially radioactive contamination-free.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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