DEVICE FOR EVALUATING COALESCENCE OF OIL EMULSION

System variables studied include media wettability, filtration velocity, interfacial tension, coalescer depth, and oil viscosity. It was shown that media preferentially wetted by the dispersed phase were better coalescing materials for separation of the oil-water emulsions. Also, preferentially wetted media exhibit smaller head loss than nonwetted media. Coalescence efficiency decreased with increasing filtration velocity and decreasing interfacial tension. No significant differences in oil removal efficiency were found for the range of viscosities studied. Partial coalescence was obtained when a shallow bed of 0.2 cm was used. Adequate coalescence was shown to be possible with a bed depth of 0.4 cm when polyester felt was used. Higher removal efficiencies could be achieved with deeper coalescence beds. A minimum oil saturation of 10% to 15% was found to be necessary for maximum coalescence within the experimental systems studied. An increase in oil removal efficiency can be anticipated as the fibrous bed becomes saturated with oil.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8675387
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Chieu, J
  • Gloyna, E F
  • Schechter, R S
• Publication Date: 1977-4

Media Info

• Features: References;
• Pagination: p. 163-175
• Serial:
  • Journal of Environmental Engineering
  • Volume: 103
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9372
  • Serial URL: http://ojps.aip.org/eeo

Subject/Index Terms

• TRT Terms: Bonding; Coalescers; Industrial wastes; Oil spill cleanup; Oil spills; Oil water interfaces; Waste products (Materials); Water pollution
• Uncontrolled Terms: Coalescence
• Old TRIS Terms: Oil emulsions; Oil removal; Oil wastes; Oil water suspensions
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00156830
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jul 2 1977 12:00AM