Compost decontamination of soil contaminated with TNT, HMX and R

Details Compost decontamination of soil contaminated with TNT, HMX and R Compost decontamination of soil contaminated with TNT, HMX and R

1998-05-18

1999-12-07

Naff, David M.

Chemistry: molecular biology and microbiology

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

Destruction of hazardous or toxic waste

71 15, 71 21, 71 25, 71903, 435170, 435264, 435267, 435822, 588207, B09B 300, C07G 1700, D06M 1600, C12N 100

Patent

active

059981997

ABSTRACT:
The present invention provides a process of decontaminating, by composting under specific conditions, soil and/or sediments containing toxic contaminants of TNT, HMX and RDX. The process is carried out by converting the contaminants into harmless materials. 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 complete degradation is achieved. Other processes for degrading compounds such as chlordane, dieldrin, toxaphene, aldrin, endrin, and heptachlorepoxide as well as polychlorinated benzenes are also disclosed.

REFERENCES:
patent: 5593888 (1997-01-01), Gray et al.
patent: 5660612 (1997-08-01), Bernier et al.
patent: 5711020 (1998-01-01), Wolfe et al.
patent: 5824541 (1998-10-01), Horn et al.
"Principles of Composting" Guele; The Biocycle to the Art in Science of Composting; Journal of Waste Recycling, the TJ Press Inc; 1991, pp. 14-271 Anaerobic DDT Biodegredation.
Environment of Application of Surfetants and the Low Oxidation Potential Applied Experimental Microboilogy, Dex. 1951, You et al p. 135;
Anaerobic DDT Degration of Contaminated Soil by Mixed Consortia and Enhancement by Surfactant in Slurry Reactors, You et al. Water Environmental Federation, Oct. 1994 pp. 635-645.

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