Method for processing aqueous effluents containing metal...

Details Method for processing aqueous effluents containing metal... Method for processing aqueous effluents containing metal...

2005-06-17

2010-06-15

Hruskoci, Peter A (Department: 1797)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S737000, C210S761000, C210S903000, C210S912000, C210S913000

Reexamination Certificate

active

07736519

ABSTRACT:
The invention relates to a method for processing an aqueous effluent (E) containing in solution at least one type of metal (M) nitrite or nitrate whose oxide is stable in an aqueous medium consisting (I) in introducing cations NH4+ in aqueous solution, generally in the form of an aqueous ammonia solution, into the aqueous effluent and, subsequently (II) in processing the obtainable medium at a temperature ranging from 100 to 700° C. and a pressure of 1-50 MPa (i.e. from 10 to 500 bar), thereby converting the metal (M) nitrite or nitrate into metal (M) oxide, nitrogen and water.

REFERENCES:
patent: 5118447 (1992-06-01), Cox et al.
patent: 5480630 (1996-01-01), Arai et al.
patent: 5641413 (1997-06-01), Momont et al.
patent: 5720889 (1998-02-01), Deaton et al.
patent: 6132491 (2000-10-01), Wai et al.
patent: 6332986 (2001-12-01), Johnson et al.
patent: 6379562 (2002-04-01), Burdeniuc
patent: 6419837 (2002-07-01), Akse
patent: 6902679 (2005-06-01), Burdeniuc
patent: 6958122 (2005-10-01), Gidner et al.
patent: 7235224 (2007-06-01), Myeong et al.
patent: 0 341 792 (1989-11-01), None
Dell'orco P C et al: “Reactions of Nitrate Salts With Ammonia in Supercritical Water” Industrial & Engineering Chemistry Research, American Chemical Society. Washington, US, vol. 36, 1997, pp. 2547-2557, XP000827945 ISSN: 0888-5885 the whole document.

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