Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste – By fixation in stable solid media
Patent
1995-05-18
1997-03-18
Mai, Ngoclan
Hazardous or toxic waste destruction or containment
Destruction or containment of radioactive waste
By fixation in stable solid media
588201, 588207, 501152, 501155, 976DIG385, 976DIG394, G21F 900
Patent
active
056132417
ABSTRACT:
A process for treating a halogen-containing waste material. The process provides a bath of molten glass containing a sacrificial metal oxide capable of reacting with a halogen in the waste material. The sacrificial metal oxide is present in the molten glass in at least a stoichiometric amount with respect to the halogen in the waste material. The waste material is introduced into the bath of molten glass to cause a reaction between the halogen in the waste material and the sacrificial metal oxide to yield a metal halide. The metal halide is a gas at the temperature of the molten glass. The gaseous metal halide is separated from the molten glass and contacted with an aqueous scrubber solution of an alkali metal hydroxide to yield a metal hydroxide or metal oxide-containing precipitate and a soluble alkali metal halide. The precipitate is then separated from the aqueous scrubber solution. The molten glass containing the treated waste material is removed from the bath as a waste glass. The process of the invention can be used to treat all types of waste material including radioactive wastes. The process is particularly suited for separating halogens from halogen-containing wastes.
REFERENCES:
patent: 3365578 (1968-01-01), Grover et al.
patent: 4097401 (1978-06-01), Guber et al.
patent: 4314909 (1982-02-01), Beall, et al.
patent: 4351749 (1982-09-01), Ropp
patent: 4395367 (1993-07-01), Rohrmann et al.
patent: 4404129 (1983-09-01), Penberthy et al.
patent: 4464294 (1984-08-01), Thiele
patent: 4497782 (1985-02-01), Howell et al.
patent: 4602574 (1986-07-01), Bach et al.
patent: 4847008 (1989-07-01), Boatner et al.
patent: 4847219 (1989-07-01), Boatner et al.
patent: 5098645 (1992-03-01), Forsberg
patent: 5120342 (1992-06-01), Richards
patent: 5202100 (1993-04-01), Nagel et al.
patent: 5301620 (1994-04-01), Nagel et al.
Abstract, Europe EP 71-927, Aug. 7, 1981.
Abstract, Japan J5 9044-699-A, Sep. 8, 1982.
Abstract, Japan J5 9127-000-A, Jan. 12, 1983.
Abstract, Japan J6 1250-596-A, Apr. 30, 1985.
Abstract, Japan J6 3241-400-A, Mar. 28, 1987.
Charles W. Forsberg, et al., "Direct Conversions of Plutonium Metal, Scrap, Residue, and Transfuranic Waste to Glass", Jan. 19, 1995, for Waste Management '95, Tucson, Arizona.
Charles W. Forsberg, "Single Waste Form Repository: Conversion of Miscellaneous Wastes to Glass", Jan. 10, 1995, for 1995 International High-Level Radioactive Waste Management Conference.
Charles W. Forsberg, et al., "Direct Conversion of Radioactive and Chemical Waste Containing Metals, Ceramics, Amorphous Solids, and Organics to Glass", May 16, 1994, for Spectrum '94 Nuclear and Hazardous Waste Management International Topical Meeting.
Charles W. Forsberg, et al., "Direct Conversion of spent Fuel to High-Level-Waste (HLW) Glass", Sep. 28, 1994, for American Nuclear Society Conference DOE Spent Nuclear Fuel: Challenges and Initiatives Session: Processing and Conditioning Options, Salt Lake City, Utah.
Beahm Edward C.
Forsberg Charles W.
Parker George W.
Adams H. W.
Guettner P. D.
Lockheed Martin Energy Systems, Inc.
Mai Ngoclan
Neely Andrew S.
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