Process for treating radioactive waste

Details Process for treating radioactive waste Process for treating radioactive waste

1980-01-31

1982-11-30

Kyle, Deborah L.

Compositions

Radioactive compositions

252632, 264 05, G21F 916

Patent

active

043615058

ABSTRACT:
N-.beta.-(aminoethyl)-.gamma.-aminopropyltrimethoxysilane [NH.sub.2 (CH.sub.2).sub.2 NH(CH.sub.2).sub.3 Si(OCH.sub.3).sub.3 ] as a silane coupling agent and SiO.sub.(2-x) (ONa).sub.x/2 (OH).sub.x/2 as colloidal silica are mixed into a radioactive liquid waste containing sodium sulfate as a main component, coming from a boiling water-type, nuclear power plant as an effluent. The resulting mixed radioactive liquid waste is supplied into a vessel provided with a rotating shaft with blades. The rotating shaft is revolved while heating the radioactive liquid waste in the vessel, thereby making the radioactive liquid waste into powder. The resulting powder containing the silane coupling agent and the colloidal silica is shaped into pellets by a pelletizer. The pellets having a low hygroscopicity and a high strength are obtained.

REFERENCES:
patent: 3988258 (1976-10-01), Curtiss
Plueddemann, "Adhesion Through Silane Coupling Agents", 25th Ann. Tech. Conf., 1970, Reinforced Plastics/Composites Div., The Society of the Plastics Industry, Inc., Section 13-D, pp. 1-10.
Plueddemann, "Mechanism of Adhesion . . .", J. of Paint Tech., vol. 42, No. 550, Nov. 1970, pp. 600-608.

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