MICROBIOLOGICAL ASSESSMENT OF THE IMPACT OF MECHANIC WORKSHOPS ON NITRIFYING BACTERIAL POPULATION
Abstract
ABSTRACT
The study was designed to evaluate the bacterial diversity of soil environment contaminated with used engine oil. Two mechanic workshops within Calabar metropolis were selected and soil samples were collected from each sites. These were analyzed using 10g of potassium nitrate kno3, 1.5g of dipostassium nitrate K2ho4, 0.75 of magnesium sulphate, 0.75 of Nacl, 0.015 of iron sulphate Feso4, and 6.0g of Agar Agar. Isolation of bacterial species was carried out using spread plate method while bacterial identification was done using morphologically, microscopic, and biochemical characterization. The following species isolated from the samples: Micrococcus spp, Aeromonas spp, and Bacillus spp. Result of this Cfu/ml 1.29 x 10⅝ to 3.90 x 10-5 and the THC ranges from 11.13 x 10-5 to 2.88 x 10⅝. The control sample for the THC was 0.61 and the Cfu/ml is 3.99. The percentage distribution in nitrifying bacterial population shows that 53.2% decrease in nitrifying bacterial population in soil sample while 34.2℅ decreases in water sample. Mechanic workshop pose significant threat to nitrifying bacteria compromising ecosystem services and environmental sustainability. Action is necessary to mitigate these impact and protect public health and the environment.
Full-Text Access Notice
In accordance with the NERD Policy on promoting peer-reviewed publication, public access to the full text of a project, thesis or dissertation is restricted for three years, allowing the author and supervisors sufficient time to pursue peer-reviewed publication.
During this period, researchers with legitimate academic or research purposes may request authorisation directly from the author to enable NERD to release the indexed full texts of the work using the form below.