Home > People > Staff > Prof Alison Lewis

Prof Alison Lewis

Director
Crystallization and Precipitation Research Unit (CPU)
Department of Chemical Engineering
University of Cape Town
Rondebosch
Cape Town 7700
South Africa

t : + 27 21 650 2702
email : alison.lewis@uct.ac.za

Qualifications

1990-1993 PhD Civil Engineering (UCT)
1986-1987 MSc Chemical Engineering (UCT)
1981-1985 BSc Chemical Engineering (UCT)


Background

Alison Lewis graduated with a BSc (Chem Eng), MSc (Chem Eng) and PhD, all from UCT, and is a registered Professional Engineer. She is the Director of the Crystallization and Precipitation Research Unit, one of the accredited research units at UCT. The Research Unit has national and international recognition as specialists in the field of Industrial Crystallization and Precipitation, especially in hydrometallurgical applications. Water and brine treatment have become an increasingly important focus of the Unit's activities.

The Research Unit is funded by a range of national and international mineral and chemical processing companies and consists of three staff members, and 11 postgraduate students.


Employment

2006-present Professor, Chemical Engineering Department, UCT
2001-2006 Associate Professor, Chemical Engineering Department, UCT
1995-2001 Senior Lecturer, Chemical Engineering Department, UCT
1995-1995 Doctoral Research Officer, Water Research Group, Civil Engineering Department (UCT)
1988-1989 Process Engineer, South African Nylon Spinners


Publications

Selected Recent Publications
For all publications click on Publications
See Prof Lewis' page at academia.edu

Randall, D.G., Nathoo J., Thomsen, K., and Lewis, A.E. 2011. Separation of ce{Na2SO4.10H2O} and ce{MgSO4.7H2O} by seeding – an application for Eutectic Freeze Crystallization, (Submitted to CHERDD-11-00125)

Nortier, P., Chagnon, P., and Lewis, A.E., 2011, Modelling the solubility in Bayer Liquors: a critical review and new models, Chemical Engineering Science, CES-D-10-01226R1, (Accepted)

Lewis, A.E., and Mangere, M., 2011. Reactive Crystallization of Copper Selenide at Very High Supersaturation: A Challenge to Classical Crystallization Theory for Sparingly Soluble Salts, Chemical Engineering and Technology, 34, 4, Article first published online: 24 March 2011

Randall, D.G., Nathoo, J., and Lewis, A.E., 2010. A case study for treating a reverse osmosis brine using Eutectic Freeze Crystallization - approaching a zero waste process, Desalination, Volume 266, Issues 1-3, 31 January 2011, Pages 256-262

Mangere, M., Nathoo, J., and A.E. Lewis, 2010. Nucleation kinetics of selenium (+4) precipitation from acidic copper sulphate solution, Journal of Crystal Growth, Volume 312, Issue 21, 15 October 2010, Pages 3178-3182

Lewis, A.E., A review of metal sulphide precipitation, 2010. Hydrometallurgy, Volume 104, Issue 2, September 2010, Pages 222-234

Mokone, T., van Hille, R.P. and A.E. Lewis, 2010. Mechanisms responsible for particle formation during metal sulphide precipitation process, Journal of Colloid and Interface Science, Volume 351, Issue 1, 1 November 2010, Pages 10-18