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Liezel van der Merwe

 Dr EM van der Merwe

Tel:      012 420-5379
Email:  [email protected]
Office: NS1, Room 3-39

Position: Senior Lecturer
Academic qualifications: PhD

Teaching:

Undergraduate Physical Chemistry courses and BSc(Hons) Chemical Kinetics course

Modules: CMY 282, CMY 717

Research interests:

Modification, characterization and valorisation of South African industrial wastes, by-products and minerals. Depending on the raw material studied and the intended application, this may include studies on solid-state thermochemical reactions, solid-liquid conversions, wet and dry surface modification techniques as well as a variety of leaching studies.

 

Publications

Journal articles

  1. Frédéric J. Doucet, Sameera Mohamed, Nicole Neyt, Barbara A. Castleman, Elizabet M. van der Merwe (2016) Thermochemical processing of a South African ultrafine coal fly ash using ammonium sulphate as extracting agent for aluminium extraction. Accepted for publication in Hydrometallurgy, 29 July 2016.
  2. Sameera Mohamed, Elizabet van der Merwe, Wladyslaw Altermann, Frederic Doucet (2016) Process development for elemental recovery from PGM tailings by thermochemical treatment: Preliminary major element extraction studies using ammonium sulphate as extracting agent. Waste Management 50, 334–345.
  3. E M van der Merwe, L C Prinsloo, C L Mathebula, H C Swart, E Coetsee, F J Doucet (2014) Surface and bulk characterization of an ultrafine South African coal fly ash with reference to polymer applications. Applied Surface Science 317, 73-83.
  4. E M van der Merwe, C L Mathebula, L C Prinsloo (2014) Characterization of the surface and physical properties of South African coal fly ash modified by sodium lauryl sulphate (SLS) for applications in PVC composites. Powder Technology 266, 70–78.
  5. F J Doucet, T K Mlambo, E M van der Merwe, W Altermann (2014) Injection of coal fly ash slurry in deep saline formations for improved CO2 confinement – A theoretical concept. International Journal of Greenhouse Gas Control 25, 198–200.

Conference proceedings

  1. Frédéric J. Doucet, Elizabet  M. van der Merwe, Nicole Neyt and Linda C. Prinsloo (2015), Extraction of Aluminum and other Strategic Metals from Coal Fly Ash using a Novel Process and Low-cost Recoverable Reagent . In: Proceedings of the 2015 World of Coal Ash Conference, Nashville, Tennessee, USA, 5-7 May. Available online at http://www.flyash.info/2015/099-vandermerwe-2015.pdf.
  2. Mathibela E. Aphane, Elizabet  M. van der Merwe, Frédéric J. Doucet and Leslie Petrik (2015), The Effect of Sulphuric Acid Concentration on the Removal of Reactive Aluminium from South African Coal Fly Ash. In: Proceedings of the 2015 World of Coal Ash Conference, Nashville, Tennessee, USA, 5‑7 May. Available online at http://www.flyash.info/2015/073-dutoit-2015.pdf.
  3. Grizelda du Toit, Elizabet M. van der Merwe, Elsabé P. Kearsley, Mike McDonald and Richard A. Kruger (2015), Compressive Strength of Chemically and Mechanically Activated Aluminosilicate systems. In: Proceedings of the 2015 World of Coal Ash Conference, Nashville, Tennessee, USA, 5-7 May. Available online at http://www.flyash.info/2015/073-dutoit-2015.pdf.
  4. E M van der Merwe, L C Prinsloo, C L Mathebula, H C Swart, E Coetsee, F J Doucet and R A Kruger (2014), Comparison between the surface and bulk characterization of an ultrafine South African coal fly ash. Published in Proceedings of EUROCOALASH 2014, Munich, Germany, 13-15 October, pp 265-280. Available online at https://www.vgb.org/shop/tb720-14.html  (ISBN 978‑3‑86875-805-4).
  5. Liezel van der Merwe, Linda Prinsloo, Richard Kruger and Lethabo Mathebula (2012), Modification of surface properties of South African coal fly ash for industrial filler applications.  Published in Proceedings of EUROCOALASH 2012 Conference, Thessaloniki, Greece, 25-27 September. Available online at http://www.evipar.org/innet/files/EUROCOALASH2012/Docs/slides/030_Merwe_et_al_EUROCOALASH2012-paper.pdf
  6. E M van der Merwe, L C Prinsloo, R A Kruger and L C Mathebula (2011), Characterization of Coal Fly Ash Modified by Sodium Lauryl Sulphate. In: Proceedings of the 2011 World of Coal Ash Conference, Denver, Colorado, USA, 9-12 May. Available online at http://www.flyash.info/2011/083-vanderMerwe-2011.pdf

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