Oil Water Separation

  • Puangrat Kajitvichyanukul
  • Yung-Tse Hung
  • Lawrence K. Wang
Part of the Handbook of Environmental Engineering book series (HEE, volume 4)


Oil and grease (O&G) is a common pollutant frequently found in the effluent of a wide range of industries. Oil and grease concentrations in wastewater, as recommended by the US Environmental Protection Agency, are not determine as the presence of specific compounds but are measured by their extractability using a particular solvent. Hexane and Freon are primary solvents used to extract oily compounds from wastewaters. Therefore, the term “oil and grease” contains a wide range of contaminants, which may include but are not limited to fatty acids, surfactants, petroleum hydrocarbons, phenolic compounds, animal and vegetable oils, etc. Many industries such as steel, aluminum, food, textile, leather, petrochemical, and metal finishing were reported as sources of high concentrations of oil and grease in their wastewaters as shown in Table 1.


Droplet Size Oily Wastewater Ater Separation Grease Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Humana Press Inc., Totowa, NJ 2006

Authors and Affiliations

  • Puangrat Kajitvichyanukul
    • 1
  • Yung-Tse Hung
    • 2
  • Lawrence K. Wang
    • 3
  1. 1.Department of Environmental EngineeringKing Mongkut’s University of TechnologyThonburi, BangkokThailand
  2. 2.Department of Civil and Environmental EngineeringCleveland State UniversityCleveland
  3. 3.Lenox Institute of Water TechnologyLenox

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