Microbial decontamination of soils contaminated with...

Details Microbial decontamination of soils contaminated with... Microbial decontamination of soils contaminated with...

B - Operations, Transporting

09

C

71/51, 195/64

B09C 1/10 (2006.01) C12S 99/00 (2010.01) C09K 3/32 (2006.01)

Patent

CA 1334582

The microbial decontamina- tion of soils contaminated with hydrocarbons, in particu- lar 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 nut- rients, water and soluble or dispersed biosurfactants as such or mixed with chemical surfactants are metered into the contaminated soils directly or into the removed con- taminated 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 degra- dation is prevented, the accessibility of mineral oils and their products for the microorganisms is simul- taneously increased and, as a result, accelerated, virtually complete mineralization by respiration to CO2 and H2O is effected.

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