Compositions – Organic luminescent material containing compositions – Scintillating or lasing compositions
Patent
1978-08-03
1980-10-28
Padgett, Benjamin R.
Compositions
Organic luminescent material containing compositions
Scintillating or lasing compositions
260 294R, 528259, G21F 916
Patent
active
042305977
ABSTRACT:
Radioactive waste materials are converted into solid form by mixing the radioactive waste with a novel polymeric formulation which, when solidified, forms a solid, substantially rigid matrix that contains and entraps the radioactive waste. The polymeric formulation comprises, in certain significant proportions by weight, urea-formaldehyde; methylated urea-formaldehyde; urea and a plasticizer. A defoaming agent may also be incorporated into the polymeric composition. In the practice of the invention, radioactive waste, in the form of a liquid or slurry, is mixed with the polymeric formulation, with this mixture then being treated with an acidic catalyzing agent, such as sulfuric acid. This mixture is then preferably passed to a disposable container so that, upon solidification, the radioactive waste, entrapped within the matrix formed by the polymeric formulation, may be safely and effectively stored or disposed of.
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Colombo et al., "Properties of Radioactive Wastes and Waste Containers", BNL-NUREG-50571 (Oct. 1976), pp. 31-33.
Kibbey et al., "A Critical Review of Solid Radioactive Waste Practices at Nuclear Power Plants", ORNL-4924 (Mar. 1974), pp. 2, 4, 8-10, 24, 25, 27.
"Radwaste Solidification System (Polymer)", Report No. HN-R1113, Revision O (Feb. 1976), Hittman Nuclear & Development Corp., Columbia, Md., pp. I-1, II-2 to II-6, III-3, III-4 and IV-4.
Bustard Thomas S.
Pohl Corriene S.
Hittman Corporation
Kyle Deborah L.
Padgett Benjamin R.
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