Bioremediation method of hydrocarbon contaminated soils, water,

Details Bioremediation method of hydrocarbon contaminated soils, water, Bioremediation method of hydrocarbon contaminated soils, water,

1997-10-07

1998-09-22

Naff, David M.

Chemistry: molecular biology and microbiology

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

Destruction of hazardous or toxic waste

210600, 424601, 564 15, 510108, 510535, A61K 3342, A01N 5926, B09B 300, C07C21100

Patent

active

058112901

ABSTRACT:
A method and composition for enhancing the biodegradation of hydrocarbon contaminated soil, water, and/or sludge are disclosed. The composition comprises an adduct of urea with a non-ionic surfactant and a phosphorous source. The disclosed method provides for the application of a degradation effective amount of a composition which comprises a N:P ratio which ranges from 10:2 to about 10:0.5 and the urea and non-ionic surfactant are present in the adduct in a weight ratio ranging from 98:2 to 75:25. Further, the method of biodegradation is carried out by the application of the composition to provide for a C:N:P ratio of 100:10:1 to 100:1:001. The C:N:P ratio is based on the weight percent of the hydrocarbon contaminate in the soil, water and/or sludge sites to be treated. Surfactants which are useful in the disclosed composition and method have from about 2 to fifty ethylene oxide groups; and comprise such compounds as alkylethoxylates, alkyl ethoxylated phosphates, alkyl ethoxylated amines, alkylethoxylated ammonium salts, etc.

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