Methods for neutralizing/detoxifying and stably fixing/solidifyi

Details Methods for neutralizing/detoxifying and stably fixing/solidifyi Methods for neutralizing/detoxifying and stably fixing/solidifyi

1998-08-24

1999-11-16

Straub, Gary P.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588 13, 588236, 588256, 210682, 210688, A62D 300, C02F 142

Patent

active

059861614

ABSTRACT:
Hazardous compounds are chemically treated to remove various pollutants by subjecting the compounds (samples) to various process steps, including selecting specific solvents and using them, treating the sample at room temperature or below (30.degree. C. or lower); separating fatty acids mixed with heavy metal and semi-metal compounds as well as the separation of organic substances (including halogenated compounds) added to heavy metals and semi-metals; and using sodium nitrite and sodium 1-naphthylamine-4-sulfonate in combination from specific solvents, thereby in the sample, adsorbing and fixating halogen substances related to air pollution, coagulation resulting from the decomposition of fatty acids and the fixation of such compounds by quicklime and graphite and the stable fixation of heavy-metal oxide and semi-metal compounds using solvents having redox action and the formation of their complex salts and compounds, the above being accomplished by a continuous processing method.

REFERENCES:
patent: 5202033 (1993-04-01), Stanforth et al.
patent: 5700107 (1997-12-01), Newton
patent: 5722928 (1998-03-01), Forrester

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