Home > Publications > 1988 - 2008
Publications

1988 - 2008

Contents

- Articles in international, accredited, peer -reviewed journals

- Books, Chapters in books and Proceedings authored and/or edited

- Books, Chapters in books and Proceedings authored and/or edited (in prep)

- Scientific/scholarly presentations at conferences

- International, published, peer-reviewed conference proceedings

- International conferences without published proceedings

- Research/technical reports to industry

 

Articles in international, accredited, peer -reviewed journals

  1. Hove, M., van Hille, R., and Lewis, A.E., 2008. Mechanisms of formation of iron precipitates from ferrous iron solutions of high and low pH, Chemical Engineering Science, 63, 6, 1626-1635. View full text

  2. Karbanee, N., van Hille, R., and Lewis, A.E., 2008. Controlled nickel sulphide precipitation using gaseous hydrogen sulphide, Industrial and Engineering Chemistry Research, 5, 47, 1596-1602. View full text

  3. Hove, M., van Hille, R.P. and Lewis, A.E., 2007. Iron solids formed from oxidation precipitation of ferrous sulphate solutions, AIChE, 53, 10, 2569-2577. View full text

  4. Chiang, Y-L., Nathoo, J. and Lewis, A.E., 2007. Investigating the control of manganese sulphide precipitation, Journal of the South African Institute of Mining and Metallurgy, 107, April 2007. View full text

  5. Ntuli, F. and Lewis, A. E., 2007. The influence of iron on the precipitation behaviour of nickel powder, Chemical Engineering Science, 62, 14, 3756-3766. View full text

  6. Lewis, A.E., 2006. Fines formation (and prevention) in seeded precipitation processes, Kona, 24, 2006, 119-125. (Invited contribution). View full text

  7. Ntuli, F. and Lewis, A. E., 2006. The effect of a morphology modifier on the precipitation behaviour of nickel powder, Chemical Engineering Science, 61 (17) 5827-5833. View full text

  8. Zhang, Y. and Lewis, A.E., 2006. Effect of crystallisation on the reaction kinetics of nickel reduction by hydrogen, Chemical Engineering Science, 61 (12) 4120-4125. View full text

  9. Lewis, A.E. and van Hille, R.P., 2006. An exploration into the sulphide precipitation method and its effect on metal removal, Hydrometallurgy, 81, April, 197-204. View full text

  10. Ochieng, A. and Lewis, A.E., 2006. CFD simulation of nickel solids off-bottom suspension and cloud height, Hydrometallurgy, 82, February, 1-12. View full text

  11. Taty-Costodes, V.C. and Lewis, A. E., 2006. Reactive crystallisation of nickel hydroxy-carbonate in a fluidised bed reactor: Fines production and column design, Chemical Engineering Science, 61, 5, 1377 – 1385. View full text

  12. Lewis, A.E. and Swartbooi, A., 2006. Factors affecting metal removal in mixed sulphide precipitation, Chemical Engineering & Technology, 29, 2, 277-280. View full text

  13. Ochieng, A. and Lewis, A.E., 2006. Nickel solids concentration distribution in a stirred tank, Minerals Engineering, 19, 2, 180–189. View full text

  14. Taty-Costodes, V.C., Mausse, C.F., Molala, K., and Lewis, A.E., 2006. A simple approach for determining particle size enlargement mechanisms in nickel reduction, International Journal of Mineral Processing, 78, 2, 93-100. View full text

  15. Lacour, S., van Hille, R., Petersen, K. and Lewis, A.E., 2005. Comparison of simulators for process and aqueous chemistry modelling, AIChE J, 51, 8, 2358 – 2368. View full text

  16. van Hille, R.P., Petersen, K. and Lewis, A.E., 2005. Copper sulphide precipitation in a fluidised bed reactor, Chemical Engineering Science, 60, 2571-2578. View full text

  17. Hounslow, M. J., Lewis, A. E., Sanders, S. J., and Bondy, R., 2005. Generic crystallizer model: I. Framework for a well-mixed compartment, AIChE J, 51, 11, 2942-2955. View full text

  18. Pillay, V., Gärtner, R.S., Himawan, C., Seckler, M.M., Lewis, A.E., and Witkamp, G.J., 2005. MgSO4 + H2O at eutectic conditions and thermodynamic solubility products of MgSO4-12H2O(s) and MgSO4-7H2O(s), Journal of Chemical and Engineering Data, 50, 2, 551-555. View full text

  19. Seewoo, S., van Hille, R. and Lewis, A.E., 2004. Aspects of gypsum precipitation in scaling waters, Hydrometallurgy, 75, Nov, 135-146. View full text

  20. Roberts, M. and Lewis, A.E, 2003. Three phase mixing studies for nickel precipitation, Minerals Engineering, 16, 9, 881-883. View full text

  21. Lewis, A.E. and Roberts, M., 2003. Using fractal structure and flow properties to describe morphology of nickel crystals, Journal of the Minerals (JOM), Metals and Materials Society, 55, February, 59-61. View full text

  22. Guillard, D. and Lewis, A.E., 2002. Optimisation of nickel hydroxy-carbonate precipitation using a laboratory pellet reactor, Industrial and Engineering Chemistry Research, 13, 41, 3110 – 3114. View full text

  23. Knobel, A.K and Lewis, A.E., 2001. A mathematical model of a high sulphate wastewater anaerobic treatment system, Water Research, 36, 257-265.

  24. Butler, B., Centurier-Harris, J.P. and Lewis, A.E., 2001. Technical note: Improving platinum precipitation processes, Minerals Engineering, 14, 8, 905 – 909.

  25. Case, J., Gunstone, R. and Lewis, A.E., 2001. Students' metacognitive development in an innovative second year engineering course, Research in Science Education, 31, 3, 331-355. View full text

  26. Lewis, A.E. and Beautement, C., 2001. Prioritising objectives for waste reprocessing: A case study in secondary lead refining, Waste Management, 22, 677-685. View full text

  27. Guillard, D. and Lewis, A.E., 2001. Nickel Carbonate precipitation in a fluidised bed reactor, Industrial and Engineering Chemistry Research, 23, 40, 5564-5569.

  28. Lewis, A.E. and Roberts, M., 2001. Quantifying morphology of nickel crystals, Journal of the South African Institute of Mining and Metallurgy, 8, 101, 421-428. View full text

  29. Lewis, A.E. and Hugo, A., 2000. Characterisation and batch testing of a secondary lead slag, Journal of the South African Institute of Mining and Metallurgy, 10, 365 - 370. View full text

  30. Cohen, B., Lewis, A.E, Petersen, J., von Blottnitz, H., Drews S.C. and Mahote, S.I., 1999. The TCLP and its applicability for the characterisation of worst case leaching of wastes from mining and metallurgical operations, Advances in Environmental Research, 3, 2.

  31. Ozinsky, A.E. and Ekama, G.A., 1995. Secondary settling tank modelling and design: (1) Review of theoretical and practical aspects, Water S.A., 21 (4), October, 325-332. View full text

  32. Ozinsky, A.E. and Ekama, G.A., 1995. Secondary settling tank modelling and design: (2) Linking of sludge settleability measures, Water S.A., 21 (4), October, 333-350.

  33. Billing, A.E. and Dold, P.L., 1988. Modelling techniques for biological reaction systems: (1) Mathematical description and model representation, Water S.A., 14 (4), October, 185-192. View full text

  34. Billing, A.E. and Dold, P.L., 1988. Modelling techniques for biological reaction systems: (2) Modelling of the steady state case, Water S.A., 14 (4), October, 193-206. View full text

  35. Billing, A.E. and Dold, P.L., 1988. Modelling techniques for biological reaction systems: (3) Modelling of the dynamic case, Water S.A., 14 (4), October, 207-218. View full text

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Books, Chapters in books and Proceedings authored and/or edited

  1. Lewis, A.E. and Olsen, C. (eds) 2007. BIWIC 2007. 14th Bremen International Workshop on Industrial Crystallization, 9-11 September, University of Cape Town, Cape Town, South Africa, IOS Press BV, Amsterdam, The Netherlands, 1-284 ISBN:978-1-58603-790-1

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Books, Chapters in books and Proceedings authored and/or edited (in prep)

  1. Andreassen, J-P and Lewis, A.E., Clusters and Growth from a Classical Perspective in Kellermeier, M. (Ed), New Perspectives on Mineral Nucleation and Growth, Springer (in press).

  2. Lewis, A.E. Chapter 9.8: Crystallization and Chapter 9.9: Precipitation in Kawatra K., Anderson, C. and Young, C. (Eds), SME Mineral Processing and Extractive Metallurgy Handbook, Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers (in prep)

  3. Lewis, A.E., Precipitation, in Lens, P., Rene, E., Lewis. A.E. and Sahinkaya, E. (Eds), Sustainable Technologies for Heavy Metal Removal from Soils, Solid Wastes and Wastewater, in Lichtfouse, E., Schwarzbauer, J., and Didier, R., Environmental Chemistry for a Sustainable World, Springer (in press)

  4. Lewis, A.E., Chapter 5: Water Quality: Treatment options and their implications, in Glazewski, J. (Ed), Shale gas mining/hydraulic fracturing in the Karoo: implications for South Africa, Juta and Co., (in prep)

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Scientific/scholarly presentations at conferences

International, published, peer-reviewed conference proceedings

  1. Reddy, S.T., Lewis, A.E., Witkamp, G.J,, van Spronsen, J., Kramer, H. and van Rosmalen, G.M., 2008. Recovery of Na2SO4-10H2O from a reverse osmosis retentate by autectic freeze technology, In Janssens, P., (ed), 17th International Symposium on Industrial Crystallization, Maastricht, The Netherlands, 14-17 September, pp 245 - 253

  2. Andreassen, J.P., Flaten, E.M., Beck, R and Lewis, A.E., 2008. Investigations of spherulitic growth in industrial crystallization processes. In Janssens, P., (ed), 17th International Symposium on Industrial Crystallization, Maastricht, The Netherlands, 14-17 September

  3. Ntuli, F. and Lewis, A.E., 2007. Precipitation kinetics of nickel in the presence of iron, 14th Bremen International Workshop on Industrial Crystallization (BIWIC), Cape Town, South Africa, 9-11 September, pp237-244.

  4. Hove, M., van Hille, R., and Lewis, A.E., 2007. The effect of different types of seeds on the oxidation and precipitation of iron from homogeneous solutions, 14th Bremen International Workshop on Industrial Crystallization (BIWIC), Cape Town, South Africa, 9-11 September , pp108 – 118.

  5. Lewis, A.E., Nathoo, J. and Glück, T., 2006. Identifying critical operating parameters and mechanism for a manganese sulphide precipitation process, 13th Bremen International Workshop on Industrial Crystallization (BIWIC), Delft, the Netherlands, 13 -15 September

  6. Reddy, S.T., and Lewis, A.E., 2006. Water and Salt Recovery from Brine Solutions, 13th Bremen International Workshop on Industrial Crystallization (BIWIC), Delft, the Netherlands, 13 -15 September

  7. Kalman, H and Lewis, A.E., 2006. Review of recent developments in Particle Technology in the Middle East and Africa, 5th World Congress on Particle Technology, Lake Buena Vista, Florida, USA, 23-27 April.

  8. Lewis, A.E. and Hounslow, M.J., 2005. Identifying mechanisms of nickel precipitation in a hydrogen reduction process. In J. Ulrich, (ed), 16th International Symposium on Industrial Crystallisation, Dresden, Germany, 11-14 September, pp. 391 - 398

  9. Lewis, A.E. and Swartbooi, A., 2005. Factors affecting metal removal in mixed sulphide precipitation. In J. Ulrich, (ed), 16th International Symposium on Industrial Crystallisation, Dresden, Germany, 11-14 September, pp. 279 - 285

  10. Lewis, A.E. and van Hille, R.P., 2005. Complexity in Sulphide Precipitation. In T. Subbaiah, (ed), Emerging Trends in Mineral Processing and Extractive Metallurgy, Bhubaneswar, India, 13-14 June, pp. 298 - 305

  11. van Hille, R., Foster, T., Storey, A., Duncan, J. and Lewis, A.E., 2004. Heavy metal precipitation by sulphide and bicarbonate: evaluating methods to predict anaerobic digester overflow performance. In A.P. Jarvis, B.A. Dudgeon, and P.L.Younger, (eds), Mine Water 2004: Process, Policy and Progress, Newcastle upon Tyne, 19-23 September 2004, pp. 141-150

  12. Lewis, A.E. and van Hille, R.P., 2003. Metal removal: crystallising some issues In L. Lorenzen, D.J. Bradshaw, C. Aldrich, J. Eksteen, M. Wright, E. Thom, (eds), Proceedings of the XXII International Minerals Processing Conference, Cape Town, South Africa, 28 September – 3 October, pp. 195

  13. Ochieng, A., Pearce, H. and Lewis, A.E., 2003. A CFD simulation of the hydrodynamics of a reactor with draft tube In L. Lorenzen, D.J. Bradshaw, C. Aldrich, J. Eksteen, M. Wright, E. Thom, (eds), Proceedings of the XXII International Minerals Processing Conference, Cape Town, South Africa, 28 September – 3 October, pp. 241

  14. Petersen, K., Lacour, S., van Hille, R.P.and Lewis, A.E., 2003. Copper sulphide precipitation: where theory meets reality, In L. Lorenzen, D.J. Bradshaw, C. Aldrich, J. Eksteen, M. Wright, E. Thom, (eds), Proceedings of the XXII International Minerals Processing Conference, Cape Town, South Africa, 28 September – 3 October, pp. 441

  15. Swartbooi, A., van Hille, R. and Lewis, A.E., 2003. An investigation into the precipitation of nickel and cobalt as sulphides In L. Lorenzen, D.J. Bradshaw, C. Aldrich, J. Eksteen, M. Wright, E. Thom, (eds), Proceedings of the XXII International Minerals Processing Conference, Cape Town, South Africa, 28 September – 3 October, pp. 440

  16. Lewis, A.E., Petersen, K. and Lacour, S., 2002. Copper removal from acid mine drainage using a pellet reactor In A. Chianese, (ed), 15th International Symposium on Industrial Crystallisation, Sorrento, Italy, 15-18 September, pp. 467-472

  17. Lewis, A.E., Nathoo, J., Seewoo, S. and Lacour, S., 2002. Prevention of scaling in mine waters using Slurry Precipitation and Recycle Reverse Osmosis (SPARRO). In A. Chianese, (ed), 15th International Symposium on Industrial Crystallisation, Sorrento, Italy, 15-18 September, pp. 1443-1448

  18. Butler, B.K., Guillard, D., White, E.T. and Lewis A.E., 2001. Metal Carbonate and Lactose – Two Environmental Crystallisations. Proceedings of the 6th World Congress of Chemical Engineering, Melbourne, Australia, 23-27 September, ISBN 0 7340 22018

  19. Lewis, A.E., and Roberts, M., 2001. Quantifying morphology of nickel crystals. Copper, Cobalt, Nickel and Zinc Recovery, Victoria Falls, Zimbabwe, 16 – 18 July, pp. 421-428

  20. Lewis A.E., Hugo A. and Beautement C. 1999. Waste Characterisation, Testing and Modification: A Case Study for Secondary Lead Slag. In: C.V. Leon, ed. International Mining and Environment Congress, Clean Technology: Third Millennium Challenge, Lima, Peru. Colegio de Ingenieros del Peru, Lima, 13-16 July, pp. 471-482 (Invited contribution)

  21. Lewis, A.E. and Petrie, J.G., 1998. Process development for biological treatment of sulphate wastewater. In: L. Bonomo and C. Nurizzo, (eds), 2nd International Conference, Advanced Wastewater Treatment, Recycling and Reuse, Milan, Italy, 14-16 Sept, pp. 639-648

  22. Lewis, A.E. and Dry, M., 1998. Secondary lead refining - A model to define acceptable limits for a slag treatment process. In: S.R. Rao, L.M. Amaratunga, G.G Richards and P.D. Kondos, (eds), Waste Processing and Recycling in Mineral and Metallurgical Industries III, The Metallurgical Society of CIM, Quebec, Canada, 16-19 Aug, pp. 195-208

  23. Lewis, A.E., 1998. Treatment of secondary lead residues for environmental protection: Waste minimisation through process understanding and improvement. In: S.R. Rao, L.M. Amaratunga, G.G Richards and P.D. Kondos, (eds), Waste Processing and Recycling in Mineral and Metallurgical Industries III, The Metallurgical Society of CIM, Quebec, Canada, 16-19 Aug, pp. 181-194

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International conferences without published proceedings

  1. Lewis, A.E. and Hounslow, M.J., 2003. Development and Testing of Phenomenological Models and Solution Algorithms for the Crystallisation Research Tool, US Department of Energy Crystallisation Project Team Meeting, Groton, Connecticut, USA, 18-19 September.

  2. Jawitz, J. and Lewis, A.E., 2001. Using SOLO to assess understanding in a final year engineering design project, First Electronic International Conference on Engineering Education, August.

  3. Butler, B.K. and Lewis, A.E., 2000. Waste not, want not: metal precipitation from effluent streams. Minerals Engineering 2000, Cape Town, 13 - 15 November.

  4. Guillard, D., Lewis, A.E. and Butler, B.K., 2000. Nickel carbonate precipitation in a pellet reactor. Minerals Engineering 2000, Cape Town, 13 - 15 November.

  5. Case, J., Gunstone R. and Lewis, A.E., 2000. Approaches to learning in a Second Year Chemical Engineering Course. American Education Research Association AERA Meeting, New Orleans, USA, April. (not presented personally)

  6. Case, J., Gunstone R. and Lewis, A.E., 2000. The impact of students’ perceptions on their metacognitive development: a case study. American Education Research Association AERA Meeting, New Orleans USA, April. (not presented personally)

  7. Case, J., Gunstone, R., Lewis A.E., 1999. Student perceptions of new approaches to teaching and assessment in an undergraduate chemical engineering course. 8th European Conference for Research on Learning and Instruction, Advancing Learning Communities In The New Millennium, Gothenburg, Sweden, 24-28 August. (not presented personally)

  8. Case, J., Gunstone, R. and Lewis, A.E., 1999. Mapping students' metacognitive development. 30th Annual Conference of the Australasian Science Education Research Association (ASERA), Rotorua, New Zealand, 8 -11 July. (not presented personally)

  9. Case, J., Jawitz, J., Lewis, A.E. and Fraser, D.M.F., 1999. Cover Less, Uncover More: A Case Study in 2nd Year Chemical Engineering. SA Association of Researchers in Maths and Science Education (SAARMSE) conference, Harare, 13-16 Jan. (not presented personally)

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Research/technical reports to industry

  1. Mbedzi, N., Nathoo, J., and Lewis, A.E., 2008. Sasol SA report

  2. Chiang, Y., Nathoo, J. and Lewis, A.E., 2008. Research Report for Alcoa AU, 2008.

  3. Petrik, L.F., Lewis, A.E., Hendry B.A., Randall, D.G., Balfour, G., Yalala, Z.G.B., Musyoka, N., and Barnard, B., 2008. Brine treatment and disposal Progress Report for Coaltech 2020, October 2008

  4. Mangere, M., Nathoo, J., and Lewis, A.E., 2008. Continuous precipitation using the replication model system: Selenium Precipitation from Acidic Copper Sulphate Solution, Progress Report to Anglo Platinum, September 2008

  5. Petrik, L.F., Lewis, A.E., Hendry B.A., Reddy, S.T., Balfour, G., Yalala, Z.G.B., Musyoka, N., and Barnard, B., 2008. Brine treatment and disposal Progress Report for Coaltech 2020, August 2008

  6. Lewis, A.E., Nathoo, J., and Ramaru, R., 2008. Phosphate precipitation from Tswane Municipality, Research Progress Report, 30 July 2008

  7. Petrik, L.F., Lewis, A.E., Hendry B.A., Reddy, S.T., Balfour, G., Yalala, Z.G.B., and Musyoka, N., 2008. Brine treatment and disposal Progress Report for Coaltech 2020, June 2008

  8. Mangere, M., Nathoo, J., and Lewis, A.E., 2008. Continuous precipitation using the replication model system: Selenium Precipitation from Acidic Copper Sulphate Solution, First Progress Report to Anglo Platinum, Feb – May 2008

  9. Lewis, A.E., Nathoo, J., and Govan, P., 2007. Measurement and modelling of solubility data for the Anglo-Zn process. Research progress report (Part 2) for Anglo American Research Laboratories, 31 January 2008

  10. Lewis, A.E., 2007. Aqueous chemistry modelling of the scaling potential of gas liquor, Research Report for Sasol Technology Pty Ltd, December 2007

  11. Lewis, A.E., Nathoo, J., and Govan, P., 2007. Measurement and modelling of solubility data for the Anglo-Zn process. Research progress report (Part 1) for Anglo American Research Laboratories, 14 December 2007

  12. Nathoo, J. and Lewis, A.E., 2007. Evaluation of BASF Selexsorb Alumina for the removal of contaminants from gas liquor in continuous mode. Research Report to Sasol Technology, 11 December 2007

  13. Petrik, L.F., Lewis, A.E., Hendry B.A., Randall, D.G., Balfour, G., and Yalala, Z.G.B., 2008. Brine treatment and disposal Progress Report for Coaltech 2020, December 2007

  14. Lewis, A.E., Nathoo, J. and Mokone, T., 2007. Reactor design for metal precipitation in mine water treatment, Water Research Commission, Private Bag, X03, Gezina, 0031, South Africa., Progress Report, November 2007

  15. Lewis, A.E. and Reddy, S., 2006. Project Progress Report, Coaltech 2020, November 2007

  16. Lewis, A.E., Nathoo, J., Randall, D.G., and Reddy, S.T., 2007. Novel Technology for Recovery of Water and Solid Salts from Hypersaline Brines: Eutectic Freeze Crystallization, Water Research Commission, Private Bag, X03, Gezina, 0031, South Africa., Progress Report, November 2007

  17. Nathoo, J. and Lewis, A.E., 2007. Progress Report # 3 (Phase 2 Part 2): Investigating the removal of contaminants from the Gas Liquor (GL) using alumina in continuous mode. Research Report to Sasol Technology, 25 October 2007.

  18. Nathoo, J. and Lewis, A.E., 2007. Progress Report # 2 (Phase 2 Part 2): Investigating the removal of contaminants from the Gas Liquor (GL) using alumina in continuous mode. Research Report to Sasol Technology, 3 October 2007.

  19. Lewis, A.E., and Nathoo, J., 2007. Acid generation by precipitation in the regenerative atmospheric leach process. Progress Report (Part 1b) for Anglo American Research Laboratories, 13 September 2007

  20. Nathoo, J. and Lewis, A.E., 2007. Progress Report Phase 2 Part 2: Preliminary results: Investigating the removal of contaminants from the Gas Liquor (GL) using alumina in continuous mode. Research Report to Sasol Technology, August 2007

  21. Petrik, L.F., Lewis, A.E., Hendry B.A., Reddy, S.T., Balfour, G., Mishra, V.K., and Vadapalli, V.R.K.., 2007. Brine treatment and disposal Progress Report for Coaltech 2020, August 2007

  22. Nathoo, J. and Lewis, A.E., 2007. Progress Report Phase 2: Preliminary results pertaining to the feasibility of using silica gel. Research Report to Sasol Technology, 15 June 2007.

  23. Nathoo, J. and Lewis, A.E., 2007. Progress Report # 1 (Phase 2 Part 2): Investigating the removal of contaminants from the Gas Liquor (GL) using alumina in continuous mode. Research Report to Sasol Technology, June 2007

  24. Nathoo, J. and Lewis, A.E., 2007. Progress Report Phase 2: Preliminary results pertaining to the feasibility of using silica gel. Research Report to Sasol Technology, 15 June 2007

  25. Petrik, L.F., Lewis, A.E., Hendry B.A., Reddy, S.T., Mishra, V.K., and Vadapalli, V.R.K.., 2007. Brine treatment and disposal Progress Report for Coaltech 2020, April 2007

  26. Lewis, A.E. and Nathoo, J., 2007. Particle analysis and mathematical description of mini plant crystal product. Research Report for Anglo American Research Laboratories, 17 January 2007

  27. Lewis, A.E. and Nathoo, J., 2006. Contaminant removal from Gas Liquor using Hydrometallurgical Methods, Research Report for Sasol Technology Pty Ltd, 15 December 2006

  28. Lewis, A.E. and Reddy, S., 2006. Coaltech 2020 Project Progress Report, November 2006

  29. Lewis, A.E. and Nathoo, J., 2006. Particle analysis and mathematical description of mini plant crystal product. Research Report for Anglo American Research Laboratories, 20 October 2006

  30. Lewis, A.E. and Nathoo, J., 2006. Characterisation of precipitation of magnesium hydroxide from brine, Research report and DVD for Industrial and Petrochemical Consultants (Pty) Ltd, 21 August 2006

  31. Lewis, A.E. and Nathoo, J., 2006. Progress report # 1: Contaminant removal from Gas Liquor using Hydrometallurgical Methods, Progress Report for Sasol Technology Pty Ltd, 11 July 2006

  32. Lewis, A.E., 2006. Process Development for NaSCN removal, Specialist Report Review for Sasol Technology Pty Ltd.

  33. Lewis, A.E. and Nathoo, J., 2006. Contaminant removal from Gas Liquor using Hydrometallurgical Methods, Research Report for Sasol Technology Pty Ltd.

  34. Lewis, A.E, 2006. Metal precipitation in mine water treatment by sulphate reduction, Final Report for WRC Consultancy, May 2006

  35. Lewis, A.E., and Nathoo, J., 2005. Final Report: Phases 1 and 2 – Measurement and modelling of solubility data, Research report for Anglo American Research Laboratories, 7 December 2005

  36. Lewis, A.E, 2005. Metal precipitation in mine water treatment by sulphate reduction, Research Report for WRC Consultancy, November 2005

  37. Lewis, A.E. and Nathoo, J., 2005. Measurement and modelling of solubility data, Research Report for Anglo American Research Laboratories, November 2005

  38. Lewis, A.E. and Nathoo, J., 2005. Manganese purification process re-engineering, Research Report for Manganese Metal Company, November 2005

  39. Lewis, A.E., 2005. Analysis of V2O5 Crystalline product: Current and new production, Research Report for Highveld Steel and Vanadium Corporation Limited, Witbank, August 2005

  40. Lewis, A.E., 2005. Aqueous chemistry simulation for raw gas liquor, Research Report for Sasol Technology Pty Ltd, August 2005

  41. Lewis, A.E.and Ntuli, F., 2005. An investigation into the crystallisation behaviour of nickel through reduction by hydrogen – Phase 3, Technical Report for Impala Platinum, May 2005

  42. Lewis, A.E., 2004. Antisolvent crystallisation preliminary process review and analysis, Technical Report for Somchem, Wellington, October 2004

  43. Lewis, A.E., Taty Costodes, V.C., Ntuli, F. and Nathoo, J., 2004. An investigation into the crystallisation behaviour of nickel through reduction with hydrogen – Phase 3, Technical Report for Impala Platinum, October 2004

  44. Lewis, A.E., 2004. An investigation into the crystallisation behaviour of nickel through reduction with hydrogen - Phase 3, Technical Report for Impala Platinum, March 2004

  45. Lewis, A.E. and Hounslow, M. J., 2003. Development and Testing of Phenomenological Models and Solution Algorithms for the Crystallisation Research Tool, US Department of Energy Crystallisation Project Team Technical Report 4: Verification of a model for a well mixed compartment, December 2003

  46. Lewis, A.E. and Hounslow, M.J., 2003. Development and Testing of Phenomenological Models and Solution Algorithms for the Crystallisation Research Tool, US Department of Energy Crystallisation Project Team Technical Report 3: Development and implementation of a model for a well-mixed compartment, December 2003

  47. Lewis, A.E., 2002. An investigation into the crystallisation behaviour of nickel through reduction with hydrogen - Phase 2, Technical Report for Impala Platinum, December 2002

  48. Lewis, A.E. and van Hille, R.P., 2002. Recovery of sodium bicarbonate from brine using carbon dioxide, Technical Report for Anglo Platinum, November 2002

  49. Lewis, A.E. and Lacour, S., 2002. Recovery of Cobalt from Hydrometallurgical Process Liquors, Technical Report for Anglo American Research Laboratories, October 2002

  50. Lewis, A.E., 2001. An investigation into crystallisation behaviour of nickel through reduction with hydrogen - Phase 1, Technical Report for Impala Platinum, December 2001

  51. Lewis, A.E., 2001. Specialist Review of Various Analytical Tests and Procedures, Anglo American Research Laboratories, September 2001

  52. Lewis, A.E., 2001, and Hagemann, J., 2001. Ore characterisation tests - methods, standards and procedures, Anglo American Research Laboratories, Gauteng, August 2001

  53. Lewis, A.E., and Hagemann, J., 2001. An investigation into the crystallization behaviour of a precious metal salt, Anglo American Research Laboratories, Gauteng, July 2001

  54. Lewis, A.E., 2001, Specialist Review of the Air Pollution, Odour and Risk Assessment Specialist Studies for the Caltex Sulphur EIA, Specialist review for Caltex Refinery, Milnerton, April 2001

  55. Lewis, A.E., 2000. Specialist Review of the Air Pollution Impact and Quantitative Risk Assessment Studies Undertaken for the Caltex Sulphur EIA, Specialist review for Caltex Refinery, Milnerton, December 2000

  56. Lewis, A.E., 2000. An investigation into crystallisation behaviour of nickel through reduction with hydrogen - Phase 0, Technical Report for Impala Platinum, November 2000

  57. Lewis, A.E., Centurier-Harris, J. and Butler, B. 2000. The Reduction of ACP to Platinum, Technical Report for Anglo Platinum, April 2000

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