Bioremediation of artificially crude oil polluted soil of veritas University Abuja using poultry manure
https://doi.org/10.26832/24566632.2021.0604012
Abstract
The removal of hydrocarbon compounds from the environment has always been a difficult undertaking for people all over the world. As a result, remedial efforts are required to safeguard the environment as well as to restore agriculture. This study looked at how poultry manure (dung) could help in the bioremediation of Veritas University's intentionally crude oil polluted soil. The physical properties of the soil and total petroleum hydrocarbon content of the crude oil polluted soil were determined, followed by the isolation and identification of microorganisms present in the soil and poultry manure before and after pollution with crude oil. These analyses were done according to standard operating procedures. Within a six-month timeframe, the natural attenuation and poultry manure amendment option for remediating the crude oil-polluted soil were monitored and the residual hydrocarbon content of the polluted soil after remediation evaluated. There was an overall decrease in pH level during the experimental units containing 4 g amendment, 2 g amendment and the untreated polluted soil in the order 8.4 to 7.1, 8.4 to 7.2 and 8.1 to 6.7, respectively. Temperature was within 27oC and 31oC, the treated soil that contained 4 g dung had an initial moisture content of 58%, and 35% after remediation. The hydrocarbon utilizing bacteria isolated were Pseudomonas species, Staphylococcus species, and Bacillus species, while the hydrocarbon utilizing fungi isolated were Aspergillus niger, Fusarium solani and Candida albicans. There was more significant microbial increase in the sample containing 4 g poultry manure treatment than 2 g poultry manure treatment and natural attenuation. Total hydrocarbon quantity significantly decreased after six months with the complete removal of C4, C7, C19 and C37 from the treated sample containing 4 g poultry manure. This indicated that the negative effects of crude oil on the environment can be mitigated by adding poultry manure.
Keywords:
Bacteria, Bioremediation, Fungi, Poultry manureDownloads
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