ABSTRACT

Petroleum hydrocarbons (PHs) are a large group of chemicals that cause great concern due to their diffusion in the environment, bioaccumulation potential, harmful effects, and resistance to environmental degradation. Soil and water pollution are closely linked to hydrocarbons from oil refineries, petrochemical industries, human activities, and other sources. The processes and factors that influence degradation should be more widely understood because the choice of bioremediation strategy depends on them. In the present study, the biodegradation behavior of petroleum hydrocarbon under different mitigation conditions has been investigated. N-Alkanes and poly-cyclic aromatic hydrocarbons (PAHs) degraded with NO3? , Fe3+, SO42? , or HCO3? as terminal electron acceptors (TEAs), link to four common degradation conditions (i.e., reduction of nitrate, ferric reduction, sulfatereducing, and metanogenic conditions, respectively) in sediment. Rapid degradation rates are achieved under sulfate reduction conditions with a half life of 49.51 days in n-alkanes and 58.74 days of PAHs. Removal of petroleum hydrocarbon from tank bottom oil sludge is a major problem because of its properties. Bioremediation is considered for the release of hydrocarbon from the oil tank below the tank, the efficiency is low and time consuming due to the low yield of biocatalyst and biosurfactants. Biodegradation analysis of diesel / biodiesel compounds in liquid cultures by the petroleum degrading microbial consortium showed that in low biodiesel amendments (10%) the efficiency of the degradation compound after seven days was lower than in petroleum diesel fuel. We have considered the potential of petroleum hydrocarbons biodegradation by 95 bacteria and 160 species of fungi separated from the previous petrochemical plant. Three species of the genetically tested GC-MS, Rhodococcus sp., Trichoderma tomentum, and Fusarium oxysporum, significantly damaged all four PAH compounds in the compound compared to control.
Publication date: 01/12/2022

https://ijbpas.com/pdf/2022/December/MS_IJBPAS_2022_6698.pdf

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https://doi.org/10.31032/IJBPAS/2022/11.12.6698