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PIV Investigation on interaction between oil and minerals

PIV Investigation on interaction between oil and minerals. Weizhi Wang a , Ying Zheng a *, Kenneth Lee b , Zhengkai Li b , Joseph V Mullin c. June 7 th , 2010. a Department of Chemical Engineering, University of New Brunswick

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PIV Investigation on interaction between oil and minerals

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  1. PIV Investigation on interaction between oil and minerals Weizhi Wanga, Ying Zhenga*, Kenneth Leeb, Zhengkai Lib, Joseph V Mullinc June 7th, 2010 aDepartment of Chemical Engineering, University of New Brunswick b Centre for Offshore Oil, Gas and Energy Research,Bedford Institute of Oceanography, Fisheries and Oceans canada cMinerals Management Service, US Department of Interior

  2. Table of content • Importance of the work • Setup and validation method • Result and discussion • Conclusion

  3. Importance of the work

  4. Oil spills around the world Oil spilled in total: 7,000,000 Tonnes (Estimated)

  5. The confocal image of an Oil-Mineral-Aggregates (OMA) Green: oil droplet Red: minerals

  6. Experiment setup and data validation Investigation of interaction between oil and minerals using Particle Image Velocimetry (PIV)

  7. Typical working procedure for PIV

  8. Experimental setup Laser producer Positive (+) vector Negative (-) vector

  9. The physical properties of minerals Minerals’ physical properties Order of hydrophobicity of minerals: C18 > C4 > Original Kaolinite

  10. The physical properties of oils Order of polarity of oils: MESA > Alaska slope oil

  11. Data Validation • Removes the vector whose noise to point ratio > 2 • Removes the points that are obviously wrong. (velocities >1m/s) • Eliminates the global fluid motion. • Average vector field is generated by Tecplot9.0 with 50 vector fields.

  12. Eliminates the global fluid motion Matrix of a vector field (Raw data)

  13. Eliminates the global fluid motion Non-background vector field Global fluid motion speed is estimated by the average of vectors whose positions are far apart from oil layer. (based on rows)

  14. Results and Discussion

  15. Vector field An oil layer coated on a glass slide Alaska Slope Oil, Original Kaolinite

  16. Effect of polarity of oils Alaska Slope Oil MESA Original Kaolinite, NaCl:30ppt, mineral:30mg/L

  17. Effect of hydrophobicity of minerals Original Kaolinite M-C18 M-C4 Alaska slope oil, NaCl:30ppt, mineral:30mg/L

  18. Effect of existence of Ca2+ Ca2+: 0; NaCl:50ppt Ca2+: 1mM; NaCl:50ppt Bitumen, silica fines

  19. Effect of Ca2+ on different oils Alaska Slope Oil MESA Original Kaolinite, NaCl: 30ppt, Ca2+: 1mM

  20. Conclusion • The PIV technique are effectively applied on the investigation of oil and clay particles. • High polarity of oil may lead to low interaction. • High hydrophobicity of mineral leads to high interaction, but ultra high hydrophobicity may decrease the interaction. • The oil-mineral-interactions are influenced by the existence of Ca2+.

  21. Acknowledgements • This work is financially supported by Fisheries and Oceans (DFO) Canada and Natural Sciences and Engineering Research Council of Canada (NSERC).

  22. Thank you!

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