Degradation of hydrocarbon substances by some bacterial species isolated from contaminated soils with motor oil


The use of microbial metabolism in the degradation of some aliphatic and aromatic compounds plays a key role in ridding the environment of hydrocarbon residues. Therefore, in this study some bacterial species were isolated from soils contaminated with motor oils and were investigated for their ability to degrade and consume these compounds as a carbon and energy sources. The spectrophotometric method to measurement the optical densities of bacterial media for all incubation period was used. The increase in the intensity of absorption was observed through the first incubation periods. Detection of the consuming compounds using GC technique showed the high ability of Bacillus sp. MOSUL1, Bacillus sp. MOSUL2, Bacillus sp. MOSUL3, Bacillus sp. MOSUL4 and Bacillus sp. RAND to degrade motor oils in contaminated soils.


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