DEGRADATION POTENTIALS OF TROPICAL SOIL BACTERIA ON DETERGENTS
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Detergents are chemicals of high environmental importance owing to their
production volumes. They are mainly released into the environment through
wastewater pathway and it could severely affect the soil environment. In this study,
we examined the degradation potentials of soil bacteria in liquid culture media
induced with detergents. Using conventional enrichment methods, via contaminated
soil slurry enrichment with selected alkyl-benzene sulphonates (detergents), we
obtained pure bacteria species capable of using alkyl-benzene sulphonates as the sole
source of carbon and energy. From the morphological and biochemical
characterization and comparison with respect to the standard reference organisms, the
bacteria isolates were presumably Corynebacterium, Pseudomonas, and Bacillus
species. Different concentrations 5.0, 10.0 15.0, and 20.0 w/v of the branded
detergents were prepared as sole carbon and energy and screened against our bacteria
species to determine their physiological gradient fluxes after 96hours of incubation.
Data obtained showed an increase in Optical density (OD) as well as increases in pH
flux values. The mean OD data obtained ranged between 0.017- 0.818, with a pH of
7.47-8.95. From this study, tropical soils possess unique bacteria species capable of
utilizing alkyl-benzene sulphonates (detergents).
Keywords
QH301 Biology