Microbial decontamination of soils contaminated with hydrocarbon

Details Microbial decontamination of soils contaminated with hydrocarbon Microbial decontamination of soils contaminated with hydrocarbon

1988-09-30

1992-07-07

Griffin, Ronald W.

Chemistry: molecular biology and microbiology

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

Cleaning using a micro-organism or enzyme

435262, 435281, 435 74, 435100, 435101, 435105, 435248, 435249, 435244, 435170, 536 182, 536 41, C10G 3200

Patent

active

051282623

ABSTRACT:
The microbial decontamination of soils contaminated with hydrocarbons, in particular with mineral oils, by microbial oxidation is improved by a process in which in addition to supplying the oxygen necessary for degradation, by aeration, soluble nutrients, water and soluble or dispersed biosurfactants as such or mixed with chemical surfactants are metered into the contaminated soils directly or into the removed contaminated soil layers, in one or more batches at time intervals, in an amount such that the formation of toxic intermediates which slow down or block microbial degradation in prevented, the accessibility of mineral oils and their products for the microorganisms is simultaneously increased and, as a result, accelerated, virtually complete mineralization by respiration to CO.sub.2 and H.sub.2 O is effected.

REFERENCES:
patent: 4146470 (1979-03-01), Mohan et al.
patent: 4349633 (1982-09-01), Worne et al.
patent: 4401569 (1983-08-01), Jhaveri et al.
patent: 4522261 (1985-06-01), McInerney et al.
patent: 4765902 (1988-08-01), Ely et al.
patent: 4814272 (1989-03-01), Wagner et al.
Wagner et al., European Congress in Biotechnology (3rd: 1984: Munich, Germany), 10-14, Sep. 1984.

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