Associate Professor John Abrahamson

Chemical and Process Engineering



Fields of Research

  • Industrial cyclones and dust collection
  • Nanoparticles, ball lightning
  • Particle technology, particle measurement
  • Refractory materials, carbon nanotubes
  • Snow avalanche mechanism

Researcher Summary

Research interests include:
-Nanoparticle research: A continuous arc process has been designed developed and patented for making nanotubes more economically than at present.
-Ball lightning research: Testing the theory that ball lightning is a collection of nanospheres of metal, resulting from a lightning strike on soil. The fine particles gradually oxidise in the air, and radiate over a lifetime of seconds or minutes.
-Particle Aggregation, Motion of Particles in Vortex and Separated Flow: Areas of study include flows in the vortex breakdowns of cyclones, flow modelling, pressure drop prediction, the influence of cyclone entry geometry and measurement of residence times of solids passing through cyclones, notably those used for collection of drying particles.
-Snow Avalanches: measurement and statistical description of shear strengths under slabs, shear zone propagation theory, mass transport & crystal metamorphosis in oscillating air flows, to understand causes of avalanches. Radar detection of cracks in snow.
-Electrostatic behaviour of particles
- Building nanostructures via charged nanoparticles

Subject Area: Disciplines

Research Groups

Key Methodologies

  • turbulent mixing and contact
  • particle aggregation
  • kinetics of adsorption

Affiliations

Publications

  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, K. (2010) QCM-D Study of β-casein on Silicate-PEG Surfaces. Journal of Applied Sciences 10(24): 3343-3348. http://dx.doi.org/10.3923/jas.2010.3343.3348. (Journal Articles)
  • Abrahamson, J., Fee, C., Morison, K. and Ngadi, N. (2009) Are PEG Molecules a Universal Protein Repellent? International Journal of Biological and Life Sciences 1(3): 116-120. (Journal Articles)
  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, K. (2008) QCM-D study on relationship of PEG coated stainless steel surfaces to protein resistance. International Journal of Natural Sciences and Engineering 1(3): 126-130. (Journal Articles)
  • Shastry, R. and Abrahamson, J. (2007) Field emission properties of carbon nanotubes grown on a continuously moving carbon substrate using arc discharge. Wellington, New Zealand: Third International Conference of Advanced Materials & Nanotechnology (AMN-3), 11-16 Feb 2007. (Conference Contributions - Oral presentations)
  • Gabites, J.R., Abrahamson, J. and Winchester, J.A. (2007) Fines Loadings in Milk Powder Plants with Washable Baghouses. Food and Bioproducts Processing 85(4): 315-321. http://dx.doi.org/10.1205/fbp07064. (Journal Articles)
  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, K. (2007) Inhibition of Protein Adsorption onto Stainless Steel by a PEG Layer. Melbourne, Australia: Chemeca 2007, 23-26 Sep 2007. 12pp. (Conference Contributions - Papers in published proceedings)
  • Abrahamson, J. (2007) Nanotube growth mechanisms in an electric arc (Invited). Wellington, New Zealand: Third International Conference of Advanced Materials & Nanotechnology (AMN-3), 11-16 Feb 2007. (Conference Contributions - Oral presentations)
  • Gabites, J.R., Abrahamson, J. and Winchester, J.A. (2006) Air flow patterns in an industrial milk powder spray dryer. Melbourne, Australia: 5th International Conference on Computational Fluid Dynamics in Minerals and Process Industries, 13-15 Dec 2006. (Conference Contributions - Papers in published proceedings)
  • Gabites, J., Abrahamson, J. and Winchester, J. (2006) Design of Washable Bag Houses for Fines Collection in Milk Powder Plants. Orlando, FL, USA: 5th World Congress on Particle Technology (WPCT5), 23-27 Apr 2006. (Conference Contributions - Poster presentations)
  • Yusoff, H.M., Abrahamson, J. and Shastry, R. (2006) Influence of anode surface temperature in a continuously-fed arc discharge depositing carbon nanotubes. Brisbane, Australia: 2006 International Conference on Nanoscience and Nanotechnology (ICONN 2006), 3-7 Jul 2006. In Proceedings International Conference on Nanoscience and Nanotechnology 2006 87-90. DOI 10.1109/ICONN.2006.340557. (Conference Contributions - Papers in published proceedings)
  • Yusoff, H.M., Shastry, R., Querrioux, T. and Abrahamson, J. (2006) Nanotube deposition in a continuous arc reactor for varying arc gap and substrate temperature. Current Applied Physics 6(3): 422-426. http://www.elsevier.com. (Journal Articles)
  • Shastry, R., Abrahamson, J., Yusoff, H. and Querrioux, T. (2006) Parameters affecting deposition of multiwalled carbon nanotubes on a continuously fed substrate using arc discharge. Brisbane, Australia: 2006 International Conference on Nanoscience and Nanotechnology (ICONN 2006), 3-7 Jul 2006. In Proceedings International Conference on Nanoscience and Nanotechnology 2006 107-111. DOI 10.1109/ICONN.2006.340562. (Conference Contributions - Papers in published proceedings)
  • Hii, M.J.W., Abrahamson, J. and Jordan, P.J. (2003) Modelling of air flow and pollen collection by a single kiwifruit flower under wind and an air jet. Melbourne, Australia: Third International Conference on CFD in the Minerals and Process Industries, 10-12 Dec 2003. 515-520. (Conference Contributions - Other)
  • Zhao, J.Q. and Abrahamson, J. (2003) The Flow in Cylindrical Cyclones. Developments in Chemical Engineering & Mineral Processing 11(3/4): 201-222. (Journal Articles)
  • Abrahamson, J. (2002) (2002, April 3). Continuous method for producing inorganic nanotubes. Patent No. PCT/NZ02/00055, International. (Intellectual Property)
  • Abrahamson, J. (Ed.) (2002) Ball Lightning. London: Royal Society, London. 1-152. (Edited Books)
  • Abrahamson, J. (2002) Ball lightning comes down to earth. Physics World 15(4): 22-23. (Journal Articles)
  • Abrahamson, J. (2002) Ball lightning from atmostpheric discharges via metal nanosphere oxidation: from soils, wood or metals. Phil. Trans. Roy. Soc. Lond. A. 360(1790): 61-88. (Journal Articles)
  • Hii, M.J.W., Abrahamson, J. and Jordan, P.J. (2002) CFD Simulation of Flow Around a Single Kiwifruit Flower. Wuhan, China: 5th International Symposium on Kiwifruit, 15-20 Sep 2002. In Proceeding of the 5th International Symposium on Kiwifruit ISHS Acta Horticulturae 610 479-487. http://www.actahort.org/books/610/610_64.htm. (Conference Contributions - Papers in published proceedings)
  • Saruchera, T. and Abrahamson, J. (2002) Granular particle flows in a cyclone - measurement of rope velocities and residence times. Christchurch, NZ: 9th APCCHE Congress and CHEMECA, Sep 2002. 1-10. (Conference Contributions - Other)
  • Abrahamson,J., Jones, R., Lau, A. and Reveley, S. (2002) Influence of entry duct bends on the performance of return-flow cyclone dust collectors. Powder Technology 123(2-3): 126-137. (Journal Articles)
  • Bychkov, A.V., Bychkov, V.L. and Abrahamson, J. (2002) On energy characteristics of ball lightning. Phil. Trans. Roy. Soc. Lond. 360(1790): 97-106. (Journal Articles)
  • Abrahamson, J. and Marshall, J. (2002) Permanent electric dipoles on gas-suspended particles and the production of filamentary aggregates. Journal of Electrostatics 55(1): 43-63. (Journal Articles)
  • Abrahamson, J., Bychkov, A.V. and Bychkov, V.L. (2002) Recently reported sightings of ball lightning: observations collected by correspondence and russian and ukrainian sightings.. Phil. Trans. Roy. SOc. Lond. 360(1790): 11-35. (Journal Articles)
  • Hii, M.J.W. and Abrahamson, J. (2002) Urea Caking Related to Evolved Ammonia Recombining with Carbon Dioxide-Evidence for Deposit on Urea. Christchurch, NZ: 9th APCCHE Congress and CHEMECA 2002, Sep 2002. 1-17. (Conference Contributions - Other)
  • Abrahamson, J. and Dinniss, J. (2000) Ball lightning caused by oxidation of nanoparticle networks from normal lightning strikes on soil. Nature 403(6769): 519--21. (Journal Articles)
  • Coleman, P.F. and Abrahamson, J. (1999) Experimental ball lightning - burning vortices in a state of vortex breakdown. Brussels, Belgium: 6th International Symposium on Ball Lightning, 26 Aug 1999. In Proceedings of the 6th Int. Symp. Ball Lightning, Int. Committee on Ball Lightning 193-197. (Conference Contributions - Other)
  • Abrahamson, J., Wiles, P.G. and Rhoades, B.L. (1999) Structure of Carbon Fibres Found on Carbon Arc Anodes. Carbon 37(11): 1873-4. (Journal Articles)
  • Zhao, J.Q. and Abrahamson, J. (1999) The Flow in Conical Cyclones. Melbourne, Australia: Second international Conference on CFD in the minerals and process industries, CSIRO, 6-8 Dec 1999. 497-502. (Conference Contributions - Other)
  • Kemp, I.C., Frankum, D.P., Abrahamson, J. and Saruchera, T. (1998) Solids Residence Time and Drying in Cyclones. Thessilonika, Greece: Proceedings of the 11th International Drying Conference, vol. A, Aug 1998. 581-8. (Conference Contributions - Other)
  • Saruchera, T. and Abrahamson, J. (1997) Residence time of granular particles through a cyclone analysis using moments, Laplace Transforms and least squares methods. Rotorua, New Zealand: 1997 Chemeca Conference, Sep 1997. In Proceedings of the 1997 Chemeca Conference 201-13. (Conference Contributions - Other)
  • Metcalfe, J.L. and Abrahamson, J. (1997) The Evolution of Ammonia from Large Heaps of Urea. Proceedings of the IPENZ Annual Conference 1997, 2 23-28. (Conference Contributions - Other)