Decontamination of metals using chemical etching

Details Decontamination of metals using chemical etching Decontamination of metals using chemical etching

1979-06-11

1980-08-12

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

134 3, 134 13, 134 41, 204 97, 204130, C23G 108, C25C 100

Patent

active

042171920

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.

REFERENCES:
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patent: 3615817 (1971-10-01), Jordan et al.
patent: 3640805 (1972-02-01), Knight et al.
patent: 3682796 (1972-08-01), Dev Bedi et al.
patent: 3821091 (1974-06-01), Bilal et al.
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patent: 3873362 (1975-03-01), Mihram et al.
patent: 4006067 (1977-02-01), Gussack
patent: 4162206 (1979-07-01), Burger et al.
Lerch, "Oxidation of Cerium (III) by Ozone and by Electrolysis" AEC Research & Devel. Report, BNNL-805, (8-1968).
Horner et al., "Cerium-Promoted Dissolution of PuO.sub.2 and PuO.sub.2 -U0.sub.2 _in Nitric Acid", Oak Ridge National Lab Report, ORNL/TM-4716 District Category UC-79C (8-1977).

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