The comparative effectiveness of remediating water polluted with crude
oil, using environment-friendly bacteria (Pseudomonasaeruginosa) and fungi (Aspergillusniger) were investigated. The samples were separately treated with Aspergillusniger and Pseudomonasaeruginosa. The bioremediation kinetic
efficiency for these systems was studied. At the end of the bioremediation
periods, the oil and grease content of the samples decreased from 47.0 mg/L in
the untreated sample to 7.0 mg/L after 20 days when inoculated with bacteria while the sample inoculated with fungi
decreased to 10.0 mg/L. Post analysis when inoculated with bacteria showed a fall
in the value of the biological oxygen demand (BOD) from 73.84 mg/L to 33.28
mg/L after 20 days, while, the fungi inoculated sample showed a reduction from
73.84 mg/L to 38.48 mg/L. The biodegradation process with the bacteria was
consistent with the pseudo-first-order model with a rate constant of 0.0891 day-1,
while the biodegradation process with the fungi was consistent with the first
order reaction model with a rate constant of 0.422 day-1. The degree
of degradation after the 20th day of inoculation with Pseudomonasaeruginosa was 85.11%, while with Aspergillusniger was
78.72%. Thus, the results obtained showed that,
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