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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 19, No. 4, 2015, pp. 585-589
Bioline Code: ja15074
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 19, No. 4, 2015, pp. 585-589

 en Population dynamics and distribution of hydrocarbon utilizing bacteria in Automobile workshops within Uyo metropolis, Akwa Ibom State
NDUBUISI-NNAJI, U. U.; JOHN, OU. M. & OFON, U. A.

Abstract

Laboratory studies were carried out to assess the bacterial population dynamics and distribution in composite soil samples collected from five (5) different automobile workshops at various locations (Ikpa road, Nwaniba road, Udi street, Idakokpo lane and Mechanic village) within Uyo metropolis. The hydrocarbon utilizing bacteria were isolated and characterized from the soils of automobile workshops using cultural techniques. The total heterotrophic bacterial count (THBC) ranged from 2.5 × 105 to 8.0 × 105 CFU/g of soil sample, while the hydrocarbon utilizing bacterial count (HUBC) ranged from 2.5 × 104 to 4.4 × 104 CFU/g of soil sample. The bacterial isolates which were both Gram positive and Gram negative belonged to the genera; Bacillus check for this species in other resources , Flavobacterium check for this species in other resources , Achromobacter check for this species in other resources , Micrococcus check for this species in other resources , Citrobacter check for this species in other resources and Acinetobacter check for this species in other resources . The total heterotrophic bacterial count (THBC) and hydrocarbon utilizing bacterial count (HUBC) were higher in Ikpa road automobile workshop and Nwaniba road automobile workshops respectively. Bacillus species was found to be present in all the soil samples analysed thus had the highest frequency 5(28%) of occurrence while Achromobacter species had the lowest frequency 1(6%) of occurrence. The presence of these organisms in soils contaminated with spent and unspent lubricating oil and their subsequent growth in enrichment medium supplemented with 1% spent lubricating oil suggest their hydrocarbon utilizing potential, hence, their possible use for the bioremediation of soils impacted with lubricating oil.

Keywords
automobile workshops; hydrocarbon utilizing bacteria; bioremediation; enrichment medium; lubricating oil

 
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