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