Graduated – 2021
MSc – Taona Chagwedera, Gypsum Seeding to Prevent Scale Formation and Improve Separation Efficiency, 2021
MSc – Lerato Motsepe, Crystal engineering in eutectic freeze crystallization, 2021
Graduated – 2020
PhD – Cledwyn Mangunda, An investigation into the precipitation of Fe(III) oxyhydroxides in lime neutralization processes, 2020
MSc – Senzo Mgabhi, The hydrated lime dissolution kinetics in acid mine drainage neutralization, 2020
MSc – Brenda Mehlo, Brine systems and characterisation, 2020
Graduated – 2019
PhD – Edmund Engelbrecht, Crystal growth kinetics of Rh-DETA salt precipitation applied to a production scale process, Dec 2019
MSc – Benita Aspeling, Selective recovery of salts from a ternary eutectic system in EFC using seeding, Dec 2019
Graduated – 2018
MSc – Genevieve Harding, Developing methods to access sensitive industrial wastewater information in South Africa (with treatment in mind), Dec 2018
Graduated – 2016
MSc – Chiara Maharaj, Treatment of a multicomponent mining effluent using calcium hydroxide in a fluidized bed crystallizer, Jun 2016
MSc – Debbie Jooste, Ice scaling in continuous eutectic freeze crystallization, Jun 2016
Graduated – 2015
MSc – Sibongiseni Gqebe, Selective metal precipitation, Dec 2015
MSc – Edward Peters, Investigation of additives during Eutectic Freeze Crystallization, Jun 2015
MSc – Vuyiswa Dube, Selective metal sulphide precipitation, Jun 2015
Graduated – 2014
MSc – Brian Willis, Development of Measurement Techniques for Aggregation in Precipitation Reaction, Jun 2014
Graduated – 2013
MSc – Tim Egan, Factors affecting the incorporation of impurities during cooling crystallisation, Dec 2013
MSc – Jemitias Chivavava, Effect of operating conditions on product quality in continuous Eutectic Freeze Crystallization, Dec 2013
MSc – Michael Kapembwa, Heat and Mass Transfer Effects of Ice Growth Crystallization in Water and Aqueous Solutions, Jun 2013
MSc – Moses Nduna, Post precipitation treatment of copper sulphide particles to improve settling properties, Jun 2013
Graduated – 2011
MSc – Emily Musil, Developing methods to measure the precipitation kinetics of sparingly soluble systems, Dec 2011
MSc – Grant Apsey, Impurities in crystals formed by Eutectic Freeze Crystallization, Dec 2011
MSc – Nobert Paradza, An investigation into the suspension attrition and breakage of nickel crystal during the nickel reduction process, Jun 2011
MSc – Rinesh Jivanji, Industrial application of Eutectic Freeze, Jun 2011
MSc – Cornelia Ras, An industrial ecology approach to salts-related, environmental sustainability problems in a large, inland industrial Complex, Jun 2011
Graduated – 2010
PhD – Thebe Mokone, Metal sulphide precipitation: effect of operational parameters on particle characteristics and proper efficiency, Dec 2010
PhD – Dyllon Randall, Development of a brine treatment protocol using Eutectic Freeze Crystallization, Dec 2010
MSc – Premesh Govan, Measurement and modelling of solubility data for sparingly soluble precipitation systems, Dec 2010
MSc – Botlhe Mokgethi, Investigation of crystallisation kinetics in a turbulent environment, Dec 2010
MSc – Yu Lun Chiang, Antisolvent gibbsite crystallization from synthetic bayer liquor, Jun 2010
MSc – Murehwa Mangere, Investigation into the kinetics, mechanisms and particle characteristics of selenium precipitation from copper sulphate solution, Jun 2010
MSc – Ndisha Mbedzi, An investigation into the removal of aluminosilicates scaling species by activated alumina, Jun 2010
MSc – Lindizwe Zibi, Industrial brine characteristics and modelling, Jun 2010
Graduated – 2000 to 2009
MSc – Rendani Ramaru, Struvite precipitation in a fluidised bed reactor, 2009
MSc – Harshad Bhika, Technological challenges in mineral processing and extractive metallurgy, 2009
PhD – Mfandaidza Hove, Iron precipitation in acid mine drainage, 2008
PhD – Freeman Ntuli, Mechanisms of precipitation in the reduction of nickel via hydrogen, 2008
MSc – Barry McGeorge, Mechanisms of rhodium precipitation, Dec 2007
MSc – Nazneen Karbanee, Investigation into the precipitation of mixed cobalt and nickel sulphides, Jun 2007
MSc – Celo Mausse, Population balance modelling in nickel reduction systems, 2006
PhD – Aoyi Ochieng, A hydrodynamic study of nickel suspension in stirred tanks, 2005
MSc – Ashton Swartbooi, Cobalt and nickel sulphide precipitation in a fluidised bed reactor, 2005
MSc – Venusan Pillay, The Simulation Of Electrolyte Systems: The System K-Na-Mg-Cl-SO4-H2O, 2004
MSc – Jeeten Nathoo, Optimisation of electrolyte composition and operating parameters for the electropolishing of 304 stainless steel, 2003
MSc – Shilpa Seewoo, Morphology control in gypsum precipitation, 2003
MSc – Karen Peterson, Copper sulphide precipitation for treatment of Acid Mine Drainage, 2002
MSc – Craig Beautement, Treatment of Secondary Lead Slag for Environmental Protection, 2001
MSc – Damien Guillard, Nickel Carbonate Precipitation in a Fluidised Bed Reactor, 2001
MSc – Jonathan Centurier-Harris, Studies in the Crystallisation behaviour of Potassium Nitrate, (co-supervised with Prof G van Rosmalen, TU Delft, Netherlands), 2000
Post Doctoral Fellows supervised
Dr Qinghai Li, PhD, 2018
Dr Sivapregasen Naidoo, PhD Western Cape, 2010
Dr Gillian Balfour, PhD Cape Town, 2007 and 2008
Dr Vinit Mishra, PhD New Delhi, 2007
Dr Christian TatyCostodes, PhD Paris, 2004 and 2005
Dr YiFei Zhang, PhD Beijing, 2004 and 2005
Dr Rob van Hille, PhD Rhodes, 2002, 2003 and 2004
Dr Stella Lacour, PhD Limoges 2001
Dr Bronwen Butler, PhD Queensland, 2000
If you require any further information about projects listed above, please contact Prof Alison Lewis