UC SPARK - University of Canterbury - New Zealand

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

Research/Scholarly/Creative Works

  • 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. (Journal articles)
  • Gabites, JR., Abrahamson, J. and Winchester, JA. (2010) Air flow patterns in an industrial milk powder spray dryer. In Chemical Engineering Research and Design 88(7): 899-910. http://dx.doi.org/10.1016/j.cherd.2009.12.009. (Conference - Published)
  • Bagga, P., Abrahamson, J. and Marshall, J. (2009) Measurement of electrostatic dipoles and net charge on particles suspended in air. In Advanced Powder Technology 20(3): 234-239. http://dx.doi.org/10.1016/j.apt.2009.03.002. (Conference - Other)
  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, K. (2009) Are PEG molecules a universal protein repellent? World Academy of Science, Engineering and Technology 37: 144-148. (Journal articles)
  • Ngadi, N., Abrahamson, J., Fee, CF. and Morison, KR. (2008) Study of adsorption kinetics and viscoelastic properties of proteins with QCM-D. Regional Symposium on Chemical Engineering (RSCE), 2/12/2008. (Conference - Other)
  • Bagga, P., Abrahamson, J. and Marshall, J. (2008) Measurement of Electrostatic Dipoles and Net Charge on Particles Suspended In Air. Chemeca 2008, 28/9/2008. (Conference - Other)
  • Abrahamson, J. (2008) Electrical aspects of nanostructure formation. CHEMCON 2008: The 61st Annual Session of IIChE, 27/12/2008. (Conference - Other)
  • 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)
  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, KR. (2008) QCM-D study on relationship of PEG coated stainless steel surfaces to protein resistance. World Congress on Science, Engineering and Technology, 21/11/2008. In Proceedings of the World Congress on Science, Engineering and Technology 47: 58-89. (Conference - Published)
  • Ngadi, N., Abrahamson, J., Fee, C. and Morison, K. (2007) Inhibition of Protein Adsorption onto Stainless Steel by a PEG Layer. Chemeca 2007, 23/9/2007. (Conference - Published)
  • Gabites, JR., Abrahamson, J. and Winchester, JA. (2007) Fines loadings in milk powder plants with washable baghouses. Food and Bioproducts Processing 85(4 C): 315-321. http://dx.doi.org/10.1205/fbp07064. (Journal articles)
  • Abrahamson, J. (2007) Nanotube growth mechanisms in an electric arc. Third International Conference of Advanced Materials & Nanotechnology (AMN-3), 11/2/2007. (Conference - Other)
  • Shastry, R. and Abrahamson, J. (2007) Field emission properties of carbon nanotubes grown on a continuously moving carbon substrate using arc discharge. Third International Conference of Advanced Materials & Nanotechnology (AMN-3), 11/2/2007. (Conference - Other)
  • Gabites, JR., Abrahamson, J. and Winchester, JA. (2006) Design of washable baghouses for fines collection in milk powder plants. AIChE Annual Meeting, Conference Proceedings (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. In Proceedings of the 2006 International Conference on Nanoscience and Nanotechnology, ICONN: 107-111. http://dx.doi.org/10.1109/ICONN.2006.340562. (Conference - Published)
  • Yusoff, HM., Abrahamson, J. and Shastry, R. (2006) Influence of anode surface temperature in a continuously-fed arc discharge depositing carbon nanotubes. In Proceedings of the 2006 International Conference on Nanoscience and Nanotechnology, ICONN: 87-90. http://dx.doi.org/10.1109/ICONN.2006.340557. (Conference - Published)
  • Yusoff, HM., 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://dx.doi.org/10.1016/j.cap.2005.11.033. (Journal articles)
  • Zhao, JQ. and Abrahamson, J. (2003) The Flow in Cylindrical Cyclones. Developments in Chemical Engineering & Mineral Processing 11(3/4): 201-222. (Journal articles)
  • Hii, MJW., Abrahamson, J. and Jordan, PJ. (2003) CFD simulation of flow around a single kiwifruit flower. In Acta Horticulturae 610: 479-487. (Conference - Published)
  • 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. http://dx.doi.org/10.1016/S0032-5910(01)00435-1. (Journal articles)
  • Abrahamson, J. (2002) Ball lightning comes down to earth. Physics World 15(4): 22-23. (Journal articles)
  • Abrahamson, J. (2002) (2002, April 3). Continuous method for producing inorganic nanotubes. Patent No. PCT/NZ02/00055. (Intellectual Property)
  • Abrahamson, J. (2002) Ball lightning from atmospheric discharges via metal nanosphere oxidation: From soils, wood or metals. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 360(1790): 61-88. http://dx.doi.org/10.1098/rsta.2001.0919. (Journal articles)
  • Saruchera, T. and Abrahamson, J. (2002) Granular particle flows in a cyclone - measurement of rope velocities and residence times. 9th APCCHE Congress and CHEMECA, 9/2002. 1-10. (Conference - Other)
  • Abrahamson, J., Bychkov, AV. and Bychkov, VL. (2002) Recently reported sightings of ball lightning: Observations collected by correspondence and Russian and Ukrainian sightings. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 360(1790): 11-35. http://dx.doi.org/10.1098/rsta.2001.0917. (Journal articles)
  • Bychkov, AV., Bychkov, VL. and Abrahamson, J. (2002) On the energy characteristics of ball lightning. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 360(1790): 97-106. http://dx.doi.org/10.1098/rsta.2001.0922. (Journal articles)
  • Abrahamson, J. (Ed.) (2002) Ball Lightning. London: Royal Society, London. 1-152. (Edited Volumes)
  • Hii, MJW. and Abrahamson, J. (2002) Urea Caking Related to Evolved Ammonia Recombining with Carbon Dioxide-Evidence for Deposit on Urea. 9th APCCHE Congress and CHEMECA 2002, 9/2002. 1-17. (Conference - Other)
  • 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. http://dx.doi.org/10.1016/S0304-3886(01)00183-8. (Journal articles)
  • Hinton, A. and Abrahamson, J. (2002) CFD analysis of reverse flow in boiler hot gas circuit (in several stages). (Reports)
  • Abrahamson, J. (2001) AAA Technology, design of deep-bed filter for spark erosion machine. (Reports)
  • Abrahamson, J. (2001) Grit arrester, emission of fibre from plant (novel cyclone modification design successfully working). (Reports)
  • Abrahamson, J. and Dinniss, J. (2000) Ball lightning caused by oxidation of nanoparticle networks from normal lightning strikes on soil. Nature 403(6769): 519-521. http://dx.doi.org/10.1038/35000525. (Journal articles)
  • Abrahamson, J. (1999) Pan Pacific, emission of fibre from plant, cyclone modifications. (Reports)
  • Coleman, PF. and Abrahamson, J. (1999) Experimental ball lightning - burning vortices in a state of vortex breakdown. 6th International Symposium on Ball Lightning, 26/8/1999. In Proceedings of the 6th Int. Symp. Ball Lightning, Int. Committee on Ball Lightning 193-197. (Conference - Other)
  • Zhao, JQ. and Abrahamson, J. (1999) The Flow in Conical Cyclones. Second international Conference on CFD in the minerals and process industries, CSIRO, 6/12/1999. 497-502. (Conference - Other)
  • Abrahamson, J., Wiles, PG. and Rhoades, BL. (1999) Structure of carbon fibres found on carbon arc anodes.. CARBON 37(11): 1873-1874. (Journal articles)
  • Abrahamson, J. (1998) Dairy Research Institute, design of cyclones. (Reports)
  • Kemp, IC., Frankum, DP., Abrahamson, J. and Saruchera, T. (1998) Solids Residence Time and Drying in Cyclones. Proceedings of the 11th International Drying Conference, vol. A, 8/1998. 581-588. (Conference - Other)
  • Metcalfe, JL. and Abrahamson, J. (1997) The Evolution of Ammonia from Large Heaps of Urea. Proceedings of the IPENZ Annual Conference 1997, 2 23-28. (Conference - Other)
  • Abrahamson, J. (1997) Lever Rexona, emissions of soap from plant - designs report. (Reports)
  • Abrahamson, J. (1997) GPSE, design of snow pillow for high-altitude weather station for New Zealand Electricity Department. (Reports)
  • Saruchera, T. and Abrahamson, J. (1997) Residence time of granular particles through a cyclone analysis using moments, Laplace Transforms and least squares methods. 1997 Chemeca Conference, 9/1997. In Proceedings of the 1997 Chemeca Conference 201-213. (Conference - Other)