Abstract

Pollution associated with crude oil (CO) extraction degrades the quality of waters, threatens drinking water sources and may ham air quality. The systems biology approach aims at learning the kinetics of substrate utilization and bacterial growth for a biological process for which very limited knowledge is available. This study uses the Pseudomonas aeruginosa to degrade CO and determines the kinetic parameters of substrate utilization and bacterial growth modeled from a completely mixed batch reactor. The ability of Pseudomonas aeruginosa can remove 91 % of the total petroleum hydrocarbons and 83 % of the aromatic compounds from oily environment. The value k of 9.31 g of substrate g−1 of microorganism d−1 could be far higher than the value k obtained for petrochemical wastewater treatment and that for municipal wastewater treatment. The production of new cells of using CO as the sole carbon and energy source can exceed 23 of the existing cells per day. The kinetic parameters are verified to contribute to improving the biological removal of CO from oily environment.

Highlights

  • The creation and evolution of technology for oil and gas industry can increase the capacity of oil and gas production [1, 2]

  • Ability of the bacterial strains to degrade crude oil hydrocarbons In this work, fourteen strains of oil-degrading bacteria were isolated from hydrocarbon-polluted samples coming from the areas of contaminated soils and effluents in Iran

  • The use of Pseudomonas aeruginosa to degrade crude oil (CO) has been shown to result in increased substrate utilization rate, as its value k of 9.31 g of substrate g−1 of microorganism d−1 could be far higher than the value k obtained for petrochemical wastewater treatment (4.44 g of substrate g−1 of microorganism d−1) and that for municipal wastewater treatment (5 g of COD g−1 of VSS d−1)

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Summary

Introduction

The creation and evolution of technology for oil and gas industry can increase the capacity of oil and gas production [1, 2]. The operation of oil and gas refineries may negatively affect the environmental quality, including air and water pollution [3]. The increase in oil and gas production can have benefits of the government’s budget for the oil-producing countries but can cause an increase in the release of pollutants into the environment. The chemicals in oil that are of most concern to humans are called such as total petroleum hydrocarbons (TPH) and aromatic compounds (AC) [4]. All of these chemicals may be released as water and air pollutants during the refining process. The petroleum refining processes of onshore/ offshore drilling and production having direct TPH and AC emission sources

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