Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
2006-09-05
2006-09-05
Johnson, Edward M. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
Reexamination Certificate
active
07101822
ABSTRACT:
The invention relates to a process for decontaminating solid iodine filters containing silver iodide, silver iodate and/or physisorbed molecular iodine.This process consists in placing the filter in contact with an aqueous solution of a reducing agent chosen from hydroxylamine, hydroxylamine salts, ascorbic acid, ascorbic acid salts, ascorbyl esters, sodium borohydride, sodium hypophosphite, formaldehyde, urea, formic acid and mixtures thereof, to extract the iodine from the filter and dissolve it in the aqueous solution.The dissolution of the silver, in the solution of reducing agent or in another suitable aqueous solution, may also be ensured, simultaneously or successively.
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Modolo et al: “Investigations on the partitioning of 129I from silver-impregnated silica in preparation for future transmutation” Nuclear Technology, American Nuclear Society. La Grange Park, Illinois, US, vol. 117, No. 1, 1997, pp. 80-86, XP002151845 ISSN: 0029-5450 cited in the application p. 81, right-hand column, paragraph 3, p. 83, right-hand column, paragraph 2, p. 84, left-hand column, paragraph 1.
Modolo et al.: “Investigation on the partitioning of 129I from silver-impregnated silica in preparation for future transmutation” Nuclear Technology, vol. 117, No. 1, pp. 80-86, 1997.
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Devisme Frederic
Donnarel Jean-Pierre
Vaudano Aime
Commissariat A l'Energie Atomique
Compagnie Generale des Matieres Nucleaires
Johnson Edward M.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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