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Evaluation of physiochemical properties of crude oil and its impact on water quality

Author Affiliations

  • 1Department of Industrial Chemistry, Michael and Cecilia Ibru University, Delta State, Nigeria
  • 2Department of Biochemistry, Michael and Cecilia Ibru University, Delta State, Nigeria
  • 3Department of Petroleum Analysis Laboratory, Petroleum Training Institute, Effurun

Res.J.chem.sci., Volume 8, Issue (7), Pages 9-14, July,18 (2018)


The Nigerian economy has improved overtime due to the prevailing role of Crude oil generation, but its spillage poses a big threat to agriculture and human health in all oil producing regions potentially causing damage to the structure and function of the ecosystem. In this investigation, the physiochemical properties of unrefined petroleum and its conductivity as its impacts on water quality was investigated. Series of tests performed using methods of American Standard for Testing Material (ASTM) to assess the various physiochemical properties of crude oil. Results from this finding reveal that at higher temperature, there is a corresponding increase in the API value across all the samples ranging from 30.70 to 43.70. All crude oil samples analyzed, showed API values greater than 31 with exception of sample C at 15°C. The results also reveals ranges for the moisture content, freezing point, pour point, Flash point and Specific Gravity as 0.12% to 0.21%, -41.3°C to -37.5°C, -10°C to -7°C, +42°C to +55°C and 0.8364 to 0.9321 respectively. The change in Conductivity values, which varies with different degrees of crude oil contamination, reveals that as the percentage of contamination increases, the conductivity value decreases. This study is appropriately timed as the need to carefully clean crude oil contamination in oil producing areas has been on the increase; thus such research geared towards remediation of such oil contaminated environment should be encouraged towards developing a sustainable environment.


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