Nael Zaki
(Assistant Research Professor)

NCSU
Kenan CO2 Center
Campus Box 7565
Raleigh, NC 27695


phone: (919) 513 1654
fax: (919) 513 1655
email: nzaki@eos.ncsu.edu
Projects    Publications & Presentations    Areas of interest   Links of Interest    Directory of all NSF students

Projects:

PAST::

Treatment of waste water from tankers, financed by the Egyptian Academy of Scientific Research and Technology. Started in 1990 and ended in 1993. Executed at Belayim Petroleum Company.

Production of synthetic liquid fuels from cellulosic wastes. Financed by Egyptian Petroleum Research Institute (EPRI) and executed at EPRI. Started in 1989 and ended 1991.

Treatment of petroleum sludge formed in petroleum tanks. Financed by the Egyptian General Petroleum Organization. Started in 1986 and still working as a special services center at EPRI.  

Treatment of hydrogen sulfide gas produced from gas wells. Financed by EPRI. Started in 1990 and still working as special services center at EPRI.

Production of Insect killing mineral oil-in-water emulsions for fruit trees. Financed by the Ministry of Agriculture. 1996.

Ideal Sequencing of non conventional petroleum products through pipelines. Financed by the Academy of Scientific Research and Technology. Started in 1994 and ended in 1997.

Preventing Asphaltenes deposition and solving the hard emulsion formation problem for enhancing crude oil production for SUCO Petroleum Company. Financed  by SUCO started 1996  

Production of block boards from date palm leaves midrib, financed by the IDRC Canadian organization and executed at the Center for development of small scale industries, Faculty of Engineering, Ain Shams University. Started in 1994 and ended in 1996.

Enhancing the biodegradation of oil spills and oil refinery byproducts using genetic engineering of indigenous microorganisms, financed by the petroleum industry with cooperation with the Egyptian genetic engineering and biotechnology research institute. Started in September 1998 and will last for three years.

Studies on the interaction between paraffin waxes, asphaltenes and resins and their influence in stabilizing water-in-crude oil emulsions. Financed by the German Petroleum Research Institute and the German Society for Scientific Research 1997.

Studying the possibility of pipeline transportation of viscous crude oil –in-water emulsions for pipeline transportation 1998.

Characterization of Refinery emulsions, NCSU funded by the Petroleum Environment Research Forum, 1999.

Studying the Crude oil Foaming Problem  in Refinery and Production, NCSU funded by Nalco-Exxon Energy Chemicals, 1999.

The Characterization and Emulsion-Forming Properties of Crude Oils of Interest to Exxon Production Research Company, NCSU August 1999.
 
 

PRESENT:

Studying water-in-Crude Oil Demulsification by applying CO2, funded by the Kenan Center for the utilization of CO2 in Manufacturing.

Demulsification of cutting oil-in-water waste emulsions by CO2.

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Publications & Presentations:

PUBLICATIONS:

  1. Gharieb, K.H., Faramawy, S. and Zaki, N.N. (1992): Liquefaction of Cellulosic Wastes I. Evaluation & Analysis of Pyrolytic Gases, Hungarian J. of Industrial Chemistry, 20, 5-9.
     

  2. Gharieb, K.H., Faramawy, S. and Zaki, N.N. (1992): Liquefaction of Cellulosic Wastes II. Upgrading of Pyrolytic Gases Via Catalytic Methanation of CO2, Hungarian J. of Industrial Chemistry, 20, 11-14.
     

  3. Gharieb, K.H., Faramawy, S. and Zaki, N.N. (1995): Liquefaction of Cellulosic Wastes V. Water Formation and Evaluation of Pyrolytic Char as a By-Product of Pyrolysis Reaction, Fuel Science & Technology International, 13, 895-899.
     

  4. Zaki, N.N, Abdel-Raouf, M.E. and Abdel-Azim, A. A. (1996) : Propylene Oxide-Ethylene Oxide Block Copolymers as Demulsifiers for Water-in-Oil Emulsions I. Effect of Molecular Weight & Hydrophilic-Lipophylic Balance (HLB) on the Demulsification Efficiency, Monatshefte für Chemie (Chemical Monthly Austria),127, 621-629.
     

  5. Zaki, N.N, Abdel-Raouf, M.E. and Abdel-Azim, A. A. (1996): Polyoxyethylenated Bisphenol-A for Breaking Water-in-Oil Emulsions, Polymers for Advanced Technologies, 7, 805-808.
     

  6. Zaki,N.N. (1997): SURFACTANT STABILIZED CRUDE OIL-IN-WATER EMULSIONS FOR PIPELINE TRANSPORTATION OF VISCOUS CRUDE OILS. Colloids & Surfaces A. Physicochemical & Engineering Aspects, 125, 19-25.
     

  7. Zaki, N.N, Abdel-Raouf, M.E. and Abdel-Azim, A. A (1996): Propylene Oxide-Ethylene Oxide Block Copolymers as Demulsifiers for Water-in-Oil Emulsions II. Effect of Temperature, Salinity, pH-Value, and Solvents on the Demulsification Efficiency,  Monatshefte für Chemie (Chemical Monthly Austria),127, 1239-1245.
     

  8. El-Sabagh, A.M., Zaki, N.N and Badawy, A.M. (1997):Effect of Binary Surfactant Mixtures on the Stability of Asphalt Emulsions. J.Chemical Technology & Biotechnology, 69, 350-356
     

  9. Zaki, N.N. and El-Sabagh, A.M. (1997): Demulsifiers for Water-in-Crude Oil Emulsions, The Efficiency of Polyalkyl phenols Polyalkylenepolyamines formaldehyde ethoxylates as Demulsifiers for Water-in-Crude Oil Emulsions.,  Tensides Surfactants Detergents 34(1), 12-17.
     

  10. Zaki, N.N., Maysour, N.E. and Abdel-Azim, A.A. (1998) Polyoxyalkylenated Amines For Breaking Of Water-In-Oil Emulsions. 1. Effect of Structural Variations on the Demulsification Efficiency. ion in ì, Polymers for Advanced Technologies, 9(2), 159-166
     

  11. Zaki, N.N., Ahmed, N.S., Nasar, A.M. and Gharieb, H.Kh. Formation of Fluid Heavy Oil-in-Water Emulsions for Pipeline Transportation, Fuel 78(5)593-600, 1999.
     

  12. Zaki, N.N., Ahmed, N.S., Nasar, A.M. and Gharieb, H.Kh. Stability and Rheology of Heavy Crude Oil-in-Water Emulsions Stabilized by an Anionic-Nonionic Surfactant Mixture , Petroleum Science and Technology, 17(5&6), 553-576 (1999).
     

  13. Zaki, N.N.,  Schorling, P.-C. and  Rahimian, I. Effect of Asphaltenes and Resins on the Stability of Water-in-Waxy -Oil Emulsions. Accepted for publication in Petroleum Science and Technology (1999).
     

  14. Nael N. Zaki and Peter K. Kilpatrick, Effect of Petroleum Asphaltenes and Resins on the Stability of Crude Oil Foams, Proceedings of the  ACS Spring Meeting in San Francisco (March 26-30, 2000).
     

  15. P.M. Spiecker,  A.P. Sullivan, N.N. Zaki and P.K. Kilpatrick, Use of Interfacial Film Rheology and Critical Electric Field Measurements to Relate Asphaltene Film Properties to Crude and Model Oil emulsion Stability, Proceedings of the  ACS Spring Meeting in San Francisco (March 26-30, 2000).
     

  16. Zaki, N.N., Maysour, N.E. and Abdel-Azim, A.A., Polyoxyalkylenated Amines For Breaking Of Water-In-Oil Emulsions. 2. Demulsification of Water-in-Oil Emulsions Stabilized by Asphaltenes and Clay, Accepted for publication in Petroleum Science and Technology  (2000).
     

  17. Zaki, N.N., Ahmed, N.S. and Nasar, A.M .Sodium Lignin Sulfonate to Stabilize Heavy Crude Oil-In-Water Emulsions for Pipeline Transportation,   Petroleum Science and technology, 18(9-10), 1175-1193, 2000.
     

  18. Zaki, N.N., Butz, T. and Kessel, D., Rheology , Particle Size Distribution and  Asphaltene Deposition of Viscous Asphaltic Crude Oil-in-Water Emulsions for Pipeline transportation. Accepted  for Publication in Petroleum science and Technology, July 23, 2000.
     

  19. B.A. Musser, N.N.Zaki and Peter K. Kilpatrick, The Role of Petroleum Wax in Mediating Water-in-Oil, Asphaltene-Stabilized Emulsions, submitted for publication in Langmuir (2000).
     

  20. Andrew P. Sullivan, Nael N. Zaki and Peter K. Kilpatrick, Correlating the Stability of Water-in-Crude and Model Oil Emulsions Using Critical Electric Field  Measurements submitted for publication in Colloids and Surfaces A (2000).
     

  21. Nael Zaki, Ruben Carbonell and Peter Kilpatrick, US Patent pending for the Utilization of CO2 in Water-in-Crude Oil Emulsion Breaking (2000).
     

  22. Nael Zaki, Ruben Carbonell and Peter Kilpatrick, US Patent pending for Crude Oil Deresination and Fractionation by CO2 (2000).
     

  23. Nael Zaki, Ruben Carbonell and Peter Kilpatrick, US Patent Disclosure for the Utilization of CO2 in the Demulsification of Cutting Oil-in-Water emulsions (2000).
     

  24. Michael K. Poindexter, Nael N. Zaki, Peter K. Kilpatrick, Samuel C. Marsh, and Daniel H. Emmons, Factors Contributing to Crude Oil Foaming, to be submitted for publication in Colloids and Surfaces A (2000).

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RECENT PRESENTATIONS, CONFERENCES AND MEETINGS

  1. Oral Presentation “The Determination of Acid and Base Numbers of Petroleum asphaltenes.” Petroleum Environmental Research Forum Meeting, Chemical Engineering Dept., North Carolina State University, Raleigh, North Carolina, June 25, 1999.
     

  2. Poster Presentation “The Demulsification of Asphaltene-Stabilized Emulsions by Dense Carbon Dioxide.”  Kenan Center for the Utilization of CO2 in Manufacturing Meeting , University of North Carolina, Chapel Hill, North Carolina, November 15, 1999.
     

  3. Poster Presentation,  “Effect of Petroleum asphaltenes and resins on the Stability of Crude Oil Foams.” Schoenborn Competition, Mcimmon Center, North Carolina State University, Raleigh, North Carolina, November 23, 1999.
     

  4. Oral Presentation, “Effect of Petroleum Asphaltenes and Resins on the Stability of Crude Oil Foams”, Presented at Symposium on: “Organic Solids in Petroleum Production” 219th ACS National Meeting, March 26-30, 2000, San Francisco.
     

  5. Poster  Presentation, “The Demulsification of Asphaltene-Stabilized Emulsions by Dense Carbon Dioxide“ Kenan Center for the Utilization of CO2 in Manufacturing Meeting , University of North Carolina, Chapel Hill, North Carolina, April 24, 2000.
     

  6. Poster  Presentation, “ The Use of CO2 for Breaking Cutting Oil-in-Water Emulsions” Kenan Center for the Utilization of CO2 in Manufacturing Meeting, University of North Carolina, Chapel Hill, North Carolina, April 24, 2000.

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Areas of interest:

Interfacial and Colloid sciences in Compressible Media

Separations, rheological studies, thin films and foams

Emulsion stability and demulsification

Petroleum Science and Technology

 

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Links of Interest

Nael Zaki's Homepage

 

 

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last update: February 07, 2001

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