Abstract

One of the main methods for removing petrol and other hydrocarbon chemical pollutants from the environment is through the use of microorganisms that are already present in contaminated soils. Exploring the frequency of isolated bacteria from oil and measure the ability of modified bacteria to hydrocarbon degradation. Twelve bacterial isolates from different oil factories. The samples were routine culture methods and test utilized to detect and as well they further confirmed using Vitek 2. Furthermore, hydrocarbon degradation test done by depended on the color change in the nutrient medium as an indicator of. Three isolates were obtained from the screening these isolates, namely Pseudomonas aeruginosa, Escherichia coli, and Sphingomonas paucimobilis. The E. coli and Ps.aeruginosa were high frequencies isolated from oil felid (60%, 30%, respectively). Furthermore, based on the Biodegradation Productivity, results after twenty-eight days the top-performing bacterial isolate for phenanthrene degradation were (Sphingomonas paucimobilis) wild type (43.6%). In terms of naphthalene breakdown, the highest degradation effectiveness was observed in (E. coli) type with a ratio of (97.7%). As for acenaphthene, (E. coli) wild type exhibited excellent degradation efficiency (88.6%).