The Potential of Some Bacteria for Fuel Residue Removal From Dora Refinery Remnants
The study investigated the effect of two types of microorganisms: Pseudomonas aeruginosa and Klebsiella pneumoniae, which were diagnosed after being isolated from contaminated soils in Al-Dora refinery. The experiment continued for seven days where tests were implemented on the 1, 3, 5, and 17 days in addition to the control sample to study. The abilities of these bacteria in the treatment of oil compounds and the efficiency of these types of bacteria were studied in the removal and decomposition of these contaminants. P. aeruginosa bacteria were efficient in reducing the value of hydrocarbons in the medium with 65.48% and the lowest efficiency of K. pneumoniae was 52.41%. P. aeruginosa showed their ability to reduce electrical conductivity at 61.10%, reduce biomass at 72.81% and reduce salinity at 62.9%. While K. pneumoniae proved a decrease in the value of hydrocarbons at 52.41%, electrical conductivity at 35.5%, biomass at 60.02%, and salinity at 50.05%. The conclusion proved that P. aeruginosa bacteria are more efficient than K. pneumoniae bacteria in breaking and removing pollutants. This indicates the possibility of using microorganisms of various types to treat and remove much of the waste of laboratories and factories in the future.
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