Biodegradation of Paraffin Crude Oil by an Isolated Pseudomonas aeruginosa N2 for Enhanced Oil Recovery

Abstract:

In this study, Pseudomonas aeruginosa N2 was used to investigate the effects of biodegradation on paraffin crude oil for microbial enhanced oil recovery. Hydrocarbon degradation and the polar component production were illustrated by different analysis methods, respectively. Strain N2 had a high emulsion capability to enhance the dissolution of crude oil, which improved the utilization of crude oil. GC-MS results showed that the relative abundance of heavy hydrocarbon was decreased after biodegradation with the increase of hydrocarbon fractions of C₁₉, C₂₀ and C₂₅. ESI FT ICR-MS was used to study the changes of the polar components. Analysis revealed that the relative abundance of N₁ and O₁ species was decreased, corresponding to the increase of the relative abundance of N₁O₁, N₁O₂, N₁O₃ and O₂ species. These polar components have the effort to reduce the interface tension and oil viscosity, thereby promoting anti-coalescence and reducing plugging to enhanced oil recovery.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 924-930
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.924
• Online since: December 2012
• Authors: Xiao Meng, Zhong Zhi Zhang, Shan Wang, Afang Shen
• Keywords: Biodegradation, Microbial Enhanced Oil Recovery, Paraffin Crude Oil, Polar Components

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