Composition and process for organic and metal contaminant fixati

Details Composition and process for organic and metal contaminant fixati Composition and process for organic and metal contaminant fixati

1992-11-12

1994-02-08

Corbin, David H.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

10628719, 405128, 405263, B09B 300, E02D 312

Patent

active

052850005

ABSTRACT:
A method and compositions using a first ferrous iron containing solution with the iron concentration in excess of theoretical requirements to treat a contaminated site to reduce hexavalent chromium to trivalent chromium and coprecipitate trivalent chromium with other heavy metals and using a second solution of silicate containing a destabilizing salt to form a relatively impermeable gel in the contaminated site thereby fixing metals and organics to the extent that there should be no detectable ground water contamination.

REFERENCES:
patent: 4116705 (1978-09-01), Chappell
patent: 4132558 (1979-01-01), Uchikawa et al.
patent: 4600514 (1986-07-01), Conner
patent: 5155042 (1992-10-01), Lupton et al.

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