Hydrocarbon Degradation Potential of Heterotrophic Bacteria in Nigeria

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Hydrocarbon degradation potentials of heterotrophic bacteria isolated from oil-polluted soil were examined.

Samples were collected from Sakpenwa, an oil producing community in Tai LGA of Rivers State, Nigeria and analyzed for physicochemical and microbiological properties using standard techniques.

Hydrocarbon utilizing bacteria (HUB) were isolated by vapour phase transfer method using mineral salt medium.

The biodegradation study was carried out on a standard laboratory shaker for 30 days in Bushnell -Haas agar supplemented with 5% of crude oil.

Fifteen (15) bacterial isolates were screened for hydrocarbon degradation potentials of which five isolates exhibited high hydrocarbon degradability.

The following parameters were monitored using each of the five isolates and a consortium during the biodegradation study: Colour change, Optical density (OD), pH, Total Petroleum Hydrocarbon (TPH), Total Hydrocarbon Contents (THC) This study demonstrated that indigenous bacterial species were highly efficient in the biodegradation of petroleum hydrocarbons.

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