Waste-treating agent

Details Waste-treating agent Waste-treating agent

1996-04-02

1998-06-23

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106697, 106721, 106737, 106802, 106811, 106815, 106DIG4, 588251, 588252, 588255, 588256, 588901, 588257, 210751, A62D 300

Patent

active

057699380

ABSTRACT:
To treat waste containing harmful netals such as lead, cadmium, mercury, chromium, copper, nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent component, solid acid(s) and/or cement and additionally a caking inhibitor, kneaded with water where necessary, then solidified by curing. Harmful metals are thereby stabilized in the thus-solidified cakes and are not released therefrom.

REFERENCES:
patent: 4131563 (1978-12-01), Bahr et al.
patent: 4209335 (1980-06-01), Kalayama et al.
patent: 4274880 (1981-06-01), Chappell
patent: 4547290 (1985-10-01), Pichat
patent: 4737356 (1988-04-01), O'hara et al.
patent: 5234498 (1993-08-01), Graves, Jr.
patent: 5362319 (1994-11-01), Johnson
patent: 5372729 (1994-12-01), Hooykass
patent: 5376283 (1994-12-01), Hooykass

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