Hazardous or toxic waste destruction or containment – Containment – Solidification – vitrification – or cementation
Patent
1995-01-31
1997-07-08
Suchfield, George A.
Hazardous or toxic waste destruction or containment
Containment
Solidification, vitrification, or cementation
501155, 588 18, 588256, A62D 300, B09B 300, G21F 900
Patent
active
056455186
ABSTRACT:
A method to stabilize solid and liquid waste at room temperature is provided comprising combining solid waste with a starter oxide to obtain a powder, contacting the powder with an acid solution to create a slurry, said acid solution containing the liquid waste, shaping the now-mixed slurry into a predetermined form, and allowing the now-formed slurry to set. The invention also provides for a method to encapsulate and stabilize waste containing cesium comprising combining the waste with Zr(OH).sub.4 to create a solid-phase mixture, mixing phosphoric acid with the solid-phase mixture to create a slurry, subjecting the slurry to pressure; and allowing the now pressurized slurry to set. Lastly, the invention provides for a method to stabilize liquid waste, comprising supplying a powder containing magnesium, sodium and phosphate in predetermined proportions, mixing said powder with the liquid waste, such as tritium, and allowing the resulting slurry to set.
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Low-Temperature-Setting Phosphate Ceramics for Stabilizing DOE Problem Low-Level Mixed Waste (Part I -Material & Waste Form Development -Dileep Singh, Arun S. Wagh and Lerry Knox) and Part II Low-Temperature-Setting Phosphate Ceramics for Stabilizing DOE Problem Low-Level Mixed Waste (Performance Studies on Final Waste Foms) -Arun S. Wagh, Dileep Singh, Manish Sutaria, and Sara Kurokawa -Proceedings of Waste Management 94 Conference-Tucson, AZ -Feb. 17-Mar. 3 1994-26 pages.
Stabilization of Low Level Mixed Waste In Chemically Bonded Phosphate Ceramics -Arun s. Wagh; Dileep singh and J. Cunnane -Spectrum 1994 "Nuclear and Hazardous Waste Management International Topical Meeting"-Atlanta, GA.-Aug. 14-18 -4 pages.
Phosphate-Bonded Ceramics as Candidate Final-Waste-Form Materials -D. Singh, A.S. Wagh, J. Cunnane, M. Sutaria & S. Kurokawa -Proceedings of 96th Annual Meeting of the American Ceramic Society, Indianapolis, IN, -April 24-28, 1994 -11 pages.
Low-Temperature-Setting Phosphate Ceramics for Mixed Waste Stabilization -Arun S. Wagh & Dileep Singh -Proceedings of Second International Symposium and Exhibition on Environmental Contamination in Central and Eastern Europe, Budapest, Hungary, Sep. 20-23 1994 -12 pages.
Conner, Jesse R., Chemical Fixation And Solidification of Hazardous Wastes, Van Nostrand Reinhold, 1990, p. 299-303.
Singh Dileep
Wagh Arun S.
Suchfield George A.
The University of Chicago
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