Compost decontamination of soil contaminated with chlorinated to

Details Compost decontamination of soil contaminated with chlorinated to Compost decontamination of soil contaminated with chlorinated to

1996-11-01

1999-05-11

Naff, David M.

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Destruction of hazardous or toxic waste

435170, 435264, 435267, 435822, 71 15, 71 21, 71 25, 71903, 588207, C12P1/04

Patent

active

059027444

ABSTRACT:
The present invention provides a process of decontaminating, by composting under specific conditions, soil and/or sediments containing certain toxic cyclical organic compound contaminants by converting these contaminants into harmless materials. The compounds include chlordane, dieldrin, toxaphene, aldrin, endrin, and heptachlorepoxide. The process includes the step of affecting a solid compost mixture during composting with a redox potential below negative 200 mV (millivolts). Further, the process includes several steps which are repeated until an amount of contaminant is degraded to less than 140 ppm (part per million) per ton of soil.

REFERENCES:
patent: 5593888 (1997-01-01), Glaze et al.
patent: 5660612 (1997-08-01), Bernier et al.
patent: 5824541 (1998-10-01), Horn et al.
"Anaerobic DDT Biodegradation: Enhancement by Application of Surfactants and Low Oxidation Reduction Potential", Applied and Enviromental Microbiology, Dec. 19 You et al., pp. 1-35, 1994.
"Anaerobic DDT Degradation of Contaminated Soil by Mixed Consorting and Enhancement by Surfatant Addition in Slurry Reactors," You et al., Water Environment Federation, Oct. 1994, pp. 635-645.
"Principles of Composting", Golucke; The Biograde Guide to the Art of Science of Composting; Journal of Waste Recycling; The JG Press, Inc, 1991, pp. 14-27.
"Microbiological Degradation of Pesticides in Yard Waste Composting," Fogarty et al, Microbiology Reviews, Jun. 1991, pp. 225-233.
"Disposal of Organic Hazardous Wastes by Composting," Savage et al., Bio Cycle Jan./Feb. 1985 pp. 31-34.

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