Method of storing radioactive wastes using modified tobermorite

Details Method of storing radioactive wastes using modified tobermorite Method of storing radioactive wastes using modified tobermorite

1983-10-31

1985-08-27

Miller, Edward A.

Compositions

Radioactive compositions

252631, G21F 916

Patent

active

045377103

ABSTRACT:
A new cation exchanger is a modified tobermorite containing aluminum isomorphously substituted for silicon and containing sodium or potassium. The exchanger is selective for lead, rubidium, cobalt and cadmium and is selective for cesium over calcium or sodium. The tobermorites are compatable with cement and are useful for the long-term fixation and storage of radioactive nuclear wastes.

REFERENCES:
patent: 4432804 (1984-02-01), Tamura
Diamond et al., "Effects of Isomorphous Substitution . . . " The Amer. Mineralogist, vol. 51 (1966) p. 388.
Kalousek et al., "Crystal Chemistry of Hydros Calcium Silicates . . . " JACS, vol. 40, (1957) p. 74.
Moore et al., "Radioactive Waste Fixation in FUE TAP" ORNL/TM-6573 (Mar. 1979).
Moore et al., "Leach Behavior of Hydrofracture Grout . . . " ANS Annual Meeting (Jun. 1976).
Komarneni et al., "Mechanisms of Immobilization of Nuclear Waste Elements . . . " Cement and Concrete Res. vol. 11 (1981) pp. 789-794.
Komarneni et al., "Hydrothermal Interactions of Cement . . . " Materials Research Soc. Ann. Mtg. Nov. 1982.
Komarneni et al., "Al-Substituted Tobermorite . . . " Cement & Concrete Research vol. 12 (1982) pp. 773-780.
Komarneni et al., "Hydrothermal Interactions of Cement . . . " MRS Symp. Proc. vol. 15 (1983) p. 55.
Komarneni et al., "Tobermorites . . . " Science vol. 221 (1983) pp. 647-648.
Hara et al., "Formation of 10 .ANG. and 14 .ANG. Tobermorite . . . " Chem. Abstracts vol. 98 (1983) 39623d.

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