Compositions – Oxidative bleachant – oxidant containing – or generative – Plural oxidants
Patent
1988-06-15
1989-11-14
Behrend, Harvey E.
Compositions
Oxidative bleachant, oxidant containing, or generative
Plural oxidants
2521861, 2521871, 25218731, 252 87, 376310, 134 3, G21F 900, C23G 102
Patent
active
048805599
ABSTRACT:
Disclosed is a method of decontaminating the metal surfaces in the cooling system of a nuclear reactor by contacting the metal surfaces with an aqueous solution containing about 0.5 to about 3% of a ceric acid which can be tetrasulfato ceric acid, hexasulfamato ceric acid, hexaperchlorato ceric acid, or mixtures thereof, and about 1 to about 5% of an inorganic acid that forms a complex with the ceric acid.
The cerium III in the aqueous solution can be oxidized to cerium IV to increase the life and effectiveness of the solution. After oxidation, the aqueous solution can be passed through a hydrogen form cation exchange column to remove metal ions. If the aqueous solution contains uranyl or plutonyl ions these can be recovered by extraction for use in making fuel.
Also disclosed is a decontaminating solution of water containing about 0.5 to about 3% of a ceric acid which can be tetrasulfato ceric acid, hexasulfamato ceric acid, hexaperchlorato ceric acid, or mixtures thereof, and about 1 to about 5% of an inorganic acid that forms a complex with the ceric acid.
REFERENCES:
patent: 4162229 (1979-07-01), Loewenschuss
patent: 4512921 (1985-04-01), Anstine et al.
patent: 4685971 (1987-08-01), Murray et al.
BNWL-805, 8/68, Lerch.
Murray Alexander P.
Slater Clifton G.
White Robert W.
Behrend Harvey E.
Fuerle R. D.
Morrison Joyce L.
Westinghouse Electric Corp.
LandOfFree
Ceric acid decontamination of nuclear reactors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceric acid decontamination of nuclear reactors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceric acid decontamination of nuclear reactors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851587