Composition and process for the encapsulation and stabilization

Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste – By fixation in stable solid media

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588255, 976DIG383, 252625, G21F 900

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active

056493231

ABSTRACT:
The present invention provides a composition and process for disposal of radioactive, hazardous and mixed wastes. The present invention preferably includes a process for multibarrier encapsulation of radioactive, hazardous and mixed wastes by combining substantially simultaneously dry waste powder, a non-biodegradable thermoplastic polymer and an anhydrous additive in an extruder to form a homogenous molten matrix. The molten matrix may be directed in a "clean" polyethylene liner, allowed to cool, thus forming a monolithic waste form which provides a multibarrier to the dispersion of wastes into the environment.

REFERENCES:
patent: 4010108 (1977-03-01), Gablin et al.
patent: 4058479 (1977-11-01), White et al.
patent: 4234632 (1980-11-01), Lubowitz
patent: 4242220 (1980-12-01), Sato
patent: 4253985 (1981-03-01), Filter et al.
patent: 4280922 (1981-07-01), Puthawala et al.
patent: 4409137 (1983-10-01), Mergan et al.
patent: 4560501 (1985-12-01), Minami et al.
patent: 4629509 (1986-12-01), O'Hara et al.
patent: 4702862 (1987-10-01), Ledebrink
patent: 4756681 (1988-07-01), Unger et al.
patent: 4762646 (1988-08-01), Fougeron et al.
patent: 4772430 (1988-09-01), Sauda et al.
patent: 4775495 (1988-10-01), Izumida et al.
patent: 4834917 (1989-05-01), Ramm et al.
patent: 4859395 (1989-08-01), Unger et al.
patent: 4932853 (1990-06-01), Unger et al.
patent: 4943394 (1990-07-01), Lammertz et al.
patent: 4975224 (1990-12-01), Pringle
patent: 4990371 (1991-02-01), Dutta et al.
patent: 5037479 (1991-08-01), Stanforth
patent: 5078924 (1992-01-01), Spinello
patent: 5164123 (1992-11-01), Goudy, Jr.
Maeda, et al, Solidification of Radioactive Ash with Thermoplastic Resin, 1986, 71-Nuclear Technology vol. 108 No. 102, 102809m.
Logsdon, B.W. et al, A Preliminary Study of Heavy Metal Leach-ability from Polyethylene Encapsulated Nitrate Salt Waste at Rock Flats, 1993, 71-Nuclear Technology vol. 123, No.299585z.
Kalb, P.D., et al., "Polyethylene Solidification of Low-Level Wastes," BNL Report No. 51867, 1984.
Kalb, P.D. et al., "Encapsulation of Mixed Radioactive and Hazardous Waste Contaminated Incinerator Ash in Modified Sulfur Cement," BNL Report No. 43691, 1990.
Freudmann, A., "Brookhaven Encases Nuclear and Hazardous Wastes in Plastic," New Technology Week, 1991.
Kalb, P.D., et al., "Polyethylene Encapsulation of Nitrate Salt Wastes: Waste Form Stability, Process Scale-Up, and Economics," BNL Report No. 52293, 1991.
Kalb, P.D. et al., "Polyethylene Encapsulation of Single-Shell Tank Low-Level Wastes," BNL Report No. 52365, 1992.
Kalb, P.D. et al., "Long-Term Durability of Polyethylene for Encapsulation of Low-Level Radioactive, Hazardous and Mixed Wastes," Chapter 22, American Chemical Society, 1993.
Kalb, P.D., et al., "Polyethylene Encapsulation of Single Shell Tank Low-Level Wastes," BNL Report No. 48607, 1993.
Kalb, P.D., et al., "Polyethylene Encapsulation of Simulated Blowdown Waste for SEG Treatability Study," BNL Report No. 49738, Apr. 15, 1994.
Kalb, P.D., et al., "Thermoplastic Encapsulation Treatability Study for a Mixed Waste Incinerator Off-Gas Scrubbing Solution," Third International Symposium on Stabilization/Solidification of Hazardous, Radioactive, and Mixed Wastes, Nov. 1993.

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