Compost decontamination of soil contaminated with PCP using aero

Details Compost decontamination of soil contaminated with PCP using aero Compost decontamination of soil contaminated with PCP using aero

1998-05-18

2000-03-07

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 11, 71 15, 71 21, 71 25, 71903, 435170, 435264, 435267, 435822, 588207, B09B 300, C07G 1700, C12P 104, D06M 1600

Patent

active

060338997

ABSTRACT:
A process of decontaminating soil containing pentachlorophenol (PCP) contaminant comprising admixing an organic nutrient material into soil in an amount of about 10% to 95% by weight of the soil mixture. The soil mixture forms a compost mixture. Composting the compost mixture at a temperature in the range of 20 to 65 degrees celsius. The water content of the compost mixture is maintained in a range of 40% to 100% water holding capacity (WHC). The redox potential level during the composting is below negative 200 mV to achieve partial degradation of the PCP contaminant. After composting, the compost mixture is oxygenated to raise the redox potential to positive 100 mV to further degrade the contaminant; and the steps are repeated until the PCP contaminant is present in an amount less than 140 ppm per ton of soil. The organic nutrient material comprises agricultural waste and municipal waste.

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patent: 5711020 (1998-01-01), Wolfe et al.
patent: 5824541 (1998-10-01), Horn et al.
"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, p 225-233.
"Disposal of Organic Hazardous Wastes by Composting", Savage et al., Bio Cycle Jan./Feb. 1985 pp 31-34.
"Anaerobic DDT Biodegradation: Enhancement by Application of Surfactants and Low Oxidation Reduction Potential", Applied and Environmental Microbiology, You et al., p 1-35, 1994.
"Anaerobic DDT Degradation of Contaminated Soil by Mixed Consorting and Enhancement by Surfactant Addition in Slurry Reactors", You et al., Water Environment Federation, Oct. 1994, p 635-645.

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