Publications & Awards

Our Awards

2021 NSTF

ROC Water Technologies/University of Limpopo team received the 2021 NSTF team award for the category SMME (Small, Medium and Macro Enterprise). From left to right: Annatjie Maree, Prof J P Maree (ROC Water and UL), Mr. Grant Greyling (Innovation Hub), Prof J Singh (Deputy Vice Chancellor: Research, Innovation and Partnerships, UL), Mr. Jason Germanis (A-Thermal), Mr. Nicolas Eleftheriades (A-Thermal)

Other awards

  • CSIR Commercialization Award (2003).
  • Senior WISA Fellow
  • SAIWA Award (WISA, 2006) for a major contribution to Industrial Water Technology.
  • Excellence in Water Research (WISA, 2008).
  • SA Premier Business Award: Category: Technology, Tshwane University of Technology for Technology for its THRIP projects on Sulphur Wastes under leadership of J P Maree and S Fourie (2013)
  • National Science & Technology Forum Award: Winner in the Category: Individual or a team for an outstanding contribution to SET through research leading to innovation in a Small, Medium or Micro Enterprise (SMME) (2014).
  • NSTF-South32 Award: Winner in the Category: SMME for Individual or a team for an outstanding contribution to SET through research leading to innovation in a Small, Medium or Micro Enterprise (SMME) (2021).

Innovate UK KTN Challenge for treatment of saline waters from toxic waste disposals sites (2024).

Book Chapters

  1. T.M. Mogashane, J. P. Maree, M. Mujuru and M. M. Mphahlele-Makgwane, “Technologies that can be Used for the Treatment of Wastewater and Brine for the Recovery of Drinking Water and Saleable Products,” in Recovery of Byproducts from Acid Mine Drainage Treatment, Editors: Elvis Fosso-Kankeu, Jo Burgess and Christian Wolkersdorfer, New York, Wiley Scrivener, 2020, pp. 97-156. doi:10.1002/9781119620204.ch5.
  2. Tumelo Monty Mogashane, Johannes Philippus Maree, Leny Letjiane, Vhahangwele Masindi, Kwena Desmond Modibane, Munyaradzi Mujuru, Mabel Mamasegare Mphahlele-Makgwane. Recovery of drinking water and nano-sized Fe2O3 pigment from iron rich acid mine water. Elvis Fosso-Kankeu, Martin Mkandawire and Bhekie Mamba (eds.) Application of Nanotechnology in Mining Processes: Beneficiation and Sustainability, (237–288) © 2022 Scrivener Publishing LLC.
  3. Conny P Mokgohloa, Johannes P Maree, David S van Vuuren, Kwena D Modibane, Munyaradzi Mujuru, Malose Mokhonoana, “Recovery of Na2CO3 and nano CaCO3 from Na2SO4 and CaSO4 wastes,” in Application of Nanotechnology in Mining Processes: Beneficiation and Sustainability, Editors: Elvis Fosso-Kankeu, Martin Mkandawire and Bhekie Mamba, New York, Wiley Scrivener, 2022, pp. 197 – 235 , ISBN:9781119865360, doi: https://doi.org/10.1002/9781119865360.ch6
  4. Tumelo Monty Mogashane, Johannes Philippus Maree, Kwena Desmond Modibane, Munyaradzi Mujuru, Mamasegare Mabel Mphahlele-Makgwane Recovery of drinking water and valuable metals from iron rich acid mine water through a combined biological, chemical and physical treatment process (in press) in Application of Nanotechnology in Mining Processes: Beneficiation and Sustainability, Editors: Elvis Fosso-Kankeu, Martin Mkandawire and Bhekie Mamba, New York, Wiley Scrivener
  5. Mokgadi Gladness Rapeta, Johannes Philippus Maree, Tumelo Monty Mogashane, Technical and economic feasibility of pigment and drinking water recovery from iron-rich acid mine water, In Customized technologies for sustainable management of industrial wastewater: Circular economy approach, Editors: Elvis Fosso-Kankeu, Vhahangwele Masindi, Johannes Maree, Bhekie Mamba, New York, Wiley Scrivener.
  6. AL Tau and JP Maree, Treatment of flue gas desulphufurization waste water from power stations using freeze crystallization, In Customized technologies for sustainable management of industrial wastewater: Circular economy approach, Editors: Elvis Fosso-Kankeu, Vhahangwele Masindi, Johannes Maree, Bhekie Mamba, New York, Wiley Scrivener.
  7. Conny P Mokgohloa, Johannes P Maree, Malose P Mokhonoana, Mary P Motaung, Recovery of na2co3 and mg(oh)2 from alkali earth metal sulphates, In Customized technologies for sustainable management of industrial wastewater: Circular economy approach, Editors: Elvis Fosso-Kankeu, Vhahangwele Masindi, Johannes Maree, Bhekie Mamba, New York, Wiley Scrivener.

Published Scientific Articles (peer reviewed)

  1. Leipoldt J G, Bok L D C, Basson S S, van Vollenhoven J S and Maree J P (1976) A kinetic study of the persulfate oxidation of octacyanotungstate(IV), Kinetics and Catalysis Letters 5(2), 203-208, DOI:10.1007/BF02279791
  2. Leipoldt J G,Bok L D C, van Vollenhoven J S and Maree J P (1977) Kinetics of the permanganate ion oxidation of potassium octacyanotungstate(IV), ZAAC, 44(1), 293-296, https://doi.org/10.1002/zaac.19774340135, Wiley Online Library
  3. Van der Merwe P H, Maree J P and Basson N D (1983) Using acid mine water for removal of phosphates from sewage effluent, Wat. Sci. Tech., 15(2), 155‑167.
  4. Maree J P (1984) Biological sulphate removal from industrial effluent, August, IMIESA, 25
  5. Maree J P and Strydom W F (1985) Biological sulphate removal in an upflow packed bed reactor, Water Research, 19(9), 1101‑1106, https://doi.org/10.1016/0043-1354(85)90346-x
  6. Maree J P, Gerber A and Strydom W F (1986) A biological process for sulphate removal from industrial effluent, Water SA, 12(3), 139‑144
  7. Maree J P and Gerber A (1986) Biological treatment of industrial effluents, S.A. Journ of Sci., 82(9), 463
  8. Slabbert J L and Maree J P (1986) Evaluation of interactive toxic effects of chemicals in water using a Tetrahymena pyriformis toxicity screening test, Water SA, 12(2), 57‑62.
  9. Maree J P and Strydom W F (1987) Biological sulphate removal from industrial effluent in a packed bed reactor, Water Research, 21(2), 141‑146, https://doi.org/10.1016/0043-1354(87)90042-x
  10. Maree J P, Gerber A, McLaren A R and Hill E (1987) Biological treatment of mining effluent, Env. Tech. Letters, 8(1-12), 53‑64, https://doi.org/10.1080/09593338709384463
  11. Maree J P, Gerber A, and Hill E (1987) An integrated process for biological treatment of sulphate containing industrial effluents, J. Water Pollut. Control Fed., 59(12), 1069‑1074.
  12. Toerien D F and Maree J P (1987) Reflections on anaerobic process biotechnology and its impact on water utilization in South Africa, Water SA, 13, 137‑144.
  13. Maree J P and Hill E (1989) Biological removal of sulphate from industrial effluents and concomitant production of sulphur, Water Sci. Technol., 21, 265‑276.
  14. Maree J  P, Hulse G, Dods D and Schutte C E (1989) Biological process for sulphate removal from industrial effluent, CHEMSA, 15(4), 125‑126 & 136.
  15. Maree J P, Bosman D, and Jenkins G R (1989) Chemical removal of sulphate, calcium and heavy metals from mining and power station effluents, Wat., Sew. & Effl., 9(3), 10‑24.
  16. Maree J P, Wagner J C and Strydom W F (1989) Sulphate removal from mining effluent in ‘Treatment and re‑use of water in the minerals industry’, Ed. H.W. Glen, SAIMM, Johannesburg
  17. Maree J P, Cole C G B, Gerber A, and Barnard J L (1990) Treatment of gelatine factory effluent, Water SA, 16(4), 265‑268.
  18. Maree J P, Hulse G, Dods, D. and Schutte C E (1991) Pilot plant studies on biological sulphate removal from industrial effluent, Wat. Sci. Tech., 23, 1293‑1300.
  19. Maree J P, du Plessis P and van der Walt C J (1992)  Treatment of acidic effluents with limestone instead of lime, Wat. Sci. Tech., 26(1-2), 345-355.
  20. du Preez L A, Odendaal J P, Maree J P and Ponsonby M (1992)  Biological removal of sulphate from industrial effluents using producer gas as energy source, Env. Techn., 13, 875-882, DOI: 10.1080/09593339209385222.
  21. du Preez L A and Maree J  (1994) Pilot-scale biological sulphate and nitrate removal utilizing producer gas as energy source, Water Science and Technology, vol. 30, no. 12, pp. 275–285.
  22. Jackson‑Moss C, Maree J P and Wootton S (1991) Treatment of bleach plant effluent with the biological granular activated carbon process. Water Sci Technol 26: 427-434.
  23. du Plessis and Maree J P (1994) Neutralisation of acid water in the chemical industry with limestone, Wat. Sci. Tech., 29(8), 93-104.
  24. Maree J P and du Plessis P (1994) Neutralisation of acid mine water with calcium carbonate, Wat. Sci. Tech., 29(9), 285-296.
  25. Dill S du Preez L Graff M and Maree J P (1995)  Biological sulphate removal from acid mine drainage utilizing producer gas as carbon- and energy source, Water, Sewage & Effluent, 15(1) 43-44
  26. Maree J P van Tonder G J, Millard P and Erasmus C (1996)  Pilot scale neutralisation of underground mine water. Wat. Sci. Tech., 34 (10), 141-149, https://doi.org/10.1016/s0273-1223(96)00708-1.
  27. Maree J P van Tonder G J Millard P and Erasmus C (1996) Underground neutralisation of mine water with limestone. Water Sewage and Effluent, 16 (3), 21-23
  28. Maree J P, Dingemans D, van Tonder G J,. and Mtimkulu S (1998)  Biological iron(II) oxidation as pre-treatment to limestone neutralisation of acid water, Wat. Sci Tech., 38 (4-5), 331-337. https://doi.org/10.1016/s0273-1223(98)00516-2
  29. Maree J P, Strydom W F and de Beer M (1999)  Integrated iron(II) oxidation and limestone neutralisation of acid mine water, Wat. Sci Tech., 39 (10-11), 231-238, https://doi.org/10.1016/s0273-1223(99)00283-8
  30. Maree J P, and van Tonder GJ (1999)  New developments in neutralisation of acid mine water, Chemical Technology, Nov/Dec, 7-9.
  31. Greben H A, Maree J P and Mnqanqeni S (2000). Comparison between sucrose, ethanol and methanol as carbon and energy source for biological sulphate reduction using the single-stage completely-mixed reactor configuration, Wat. Sci Tech., 41 (12), 247-253
  32. Greben H A, Maree J P, Singmin Y and Mnqanqeni S (2000). Biological sulphate removal from acid mine effluent using ethanol as carbon and energy source, Wat. Sci Tech., 42(3), 339-344.
  33. Van Zyl H C, Maree J P, van Niekerk A M, van Tonder G J and Naidoo C (2000)  Collection, treatment and re-use of mine water in the Olifants River Catchment, SAIMM, 101(1), 41-46.
  34. Greben H A, Bologo H, and Maree J P (2002). The effect of different parameters on the biological volumetric and specific sulphate removal rates.  Water SA. Special Edition, WISA Biennial Conference 2002, 33-37.
  35. Geldenhuys A J, Maree J P, de Beer M and Hlabela P (2003). An integrated limestone/lime process for partial sulphate removal, The Journal of The South African Institute of Mining and Metallurgy, July/August, 103(6), 345-353.
  36. Maree J P, Greben H and de Beer M (2004)  Treatment of acid and sulphate-rich effluents in an integrated biological/chemical process, Water SA, 30(2), 183-189
  37. Nengovhela N R, Strydom C A, Maree J P and Greben H A (2004) Chemical and Biological oxidation of iron in Acid Mine Water, Mine Water and the Environment, 23(2), 76 – 80, https://doi.org/10.1007/s10230-004-0042-2
  38. Maree J P, Günther P, Strobos G, and Waanders F B (2004) Optimizing the Effluent Treatment at a Coal Mine by Process Modelling, Mine Water and the Environment, 23(2), 87-90, https://doi.org/10.1007/s10230-004-0044-0
  39. Maree J P, Hagger M J, Strobos G, Hlabela P, Cronjé H, van Niekerk A, Wurster A, Nengovhela R and Waanders F B (2004) Design Criteria for Limestone Neutralization at a Nickel Mine, Mine Water and the Environment, 23(3), 152-156, https://doi.org/10.1007/s10230-004-0056-9
  40. Maree J P, Strobos G, Greben H, Netshidaulu E, Steyn E, Christie A, Günther P, and Waanders F B (2004) Treatment of Acid Leachate from Coal Discard using Calcium Carbonate and Biological Sulphate Removal, Mine Water and the Environment, 23(3), 144-151, https://doi.org/10.4314/wsa.v30i2.5062
  41. Maree J P, Hlabela P, Nengovhela R, Geldenhuys A J, Mbhele N, Nevhulaudzi T, and Waanders F B (2004) Treatment of Mine Water for Sulphate and Metal Removal Using Barium Sulphide, Mine Water and the Environment, 23(4), 195-203, https://doi.org/10.1007/s10230-004-0062-y
  42. Maree J P, de Beer M, Strydom W F, Christie A D M and Waanders F B (2004) Neutralizing Coal Mine Effluent with Limestone to Decrease Metals and Sulphate Concentrations, Mine Water and the Environment, 23(2), 81 – 86, https://doi.org/10.1007/s10230-004-0043-1
  43. Greben H A, Maree J P, Eloff E and Murray K (2005) Improved sulphate removal rates at increased sulphide concentration in the sulphidogenic bioreactor, Water SA, 31(3).
  44. Maree J P, Theron D, Nengovhela R, and Hlabela P (2005) Sulphur from smelter gasses and sulphate-rich effluents, The Journal of the South African Institute of Mining and Metallurgy, 105(9), 1-4.
  45. Greben H A and Maree J P (2005) Removal of sulphate, metals, and acidity from a nickel and copper mine effluent in a laboratory scale bioreactor, Mine Water and the Environment}, 24(4), 194-198, DOI: 10.1007/s10230-005-0095-x, EID: 2-s2.0-33746875597.
  46. Patrick H, Maree J P and Bruinsma D (2007). Barium Carbonate Process for Sulphate and Metal Removal from Mine Water, Mine Water and the Environment, 26(1), 14-22, https://doi.org/10.1007/s10230-007-0145-7
  47. Nengovhela N R, Strydom C A, Maree J P, Oosthuizen S and Theron D J (2007) Recovery of sulphur and calcium carbonate from waste gypsum. Water SA, 33(5), 741-748
  48. de Beer M, Mathews E H, Krueger D, Maree J P, Mbhele N, Phalanndwa M and Novhe O (2008). Limestone neutralization of arsenic-rich effluent from a gold mine, In Water Environ 27, 46-51, https://doi.org/10.1007/s10230-007-0023-3
  49. Motaung S, Maree J P, de Beer M, Bologo L, Theron D and Baloyi J (2008) Recovery of Drinking Water and By-Products from Gold Mine Effluents, Water Resources Development, 24(3), 433-450. DOI: 10.1080/07900620802150475
  50. Masukume M, Maree J P, Ruto S, Joubert H (2012) Processing of Barium Sulphide to Barium Carbonate and Sulphur. J Chem Eng Process Technol 4(4), 1-4
  51. Rukuni T T, Maree J P, Carlsson F H H and Zvinowanda C M (2012) Separation of Magnesium Hydroxide and Barium Sulphate from a Barium Sulphate-Magnesium Hydroxide Mixed Sludge by Carbonation: The Effect of Temperature. International Journal of Civil and Environmental Engineering, 2(116), 1-5
  52. Rukuni, T T, Maree, J P, Carlsson F.H.H and Zvinowanda, C M (2012), The effect  of temperature and pressure on the separation of calcium carbonate and barium sulphate from a mixed sludge. International Journal of Chemical Eng and Process technology, 3(117), 1-6  
  53. Mulopo Regeneration of BaCO3 https://doi.org/10.2166/wst.2012.857
  54. Bologo V, Maree J P and Carlsson F (2012) Application of magnesium hydroxide and barium hydroxide for the removal of metals and sulphate from mine water (MBO), Water SA 38(1), 23–28, https://doi.org/10.4314/wsa.v38i1.4
  55. Masukume M, Onyango M S and Maree J P (2017) Performance characteristics of synthetic zeolite F9 for treating high iron and manganese acid mine drainage. Environmental Engineering & Management Journal, 16(10), 2255-2265
  56. Rukuni T T, Maree J P, Carlsson F H H and Zvinowanda C M (2012) Separation of Magnesium Hydroxide and Barium Sulphate from a Barium Sulphate-Magnesium Hydroxide Mixed Sludge by Carbonation: The Effect of Temperature. International Journal of Civil and Environmental Engineering. 2:116 16-28. (doi: 10.4172/2165-784X.1000116)
  57. Rukuni T T, Maree J P, Carlsson F H H and Zvinowanda C M (2012) The effect of temperature and pressure on the separation of calcium carbonate and barium sulphate from a mixed sludge. International Journal of Chemical and Process technology. 3(117), 1-5, (doi: 10.4172/2157-7048.1000137)
  58. Maree J P, Zvinowanda C M, Mujuru M, Matsapola R M, Delport D J, Wynand J L (2012) Recovery of Calcium Carbonate from Wastewater Treatment Sludge Using a Flotation Technique, J. Chem. Eng. Process Technol., 3(2), 1-6
  59. Adeniyi A, Mbaya R K K, Maree J P, Popoola A P I and Oosthuizen F S 2012. The HybridICE HIF Filter in Freeze Desalination of Mine Waters: An Overview of Operation, Process Analysis and Research Needs. OIDA International Journal of Sustainable Development, 5(8), 77-82.
  60. Agboola O, Schoeman J J, Maree J P, Mbaya R, Kolesnikov A (2012) Performance of an acid stable nanofiltration membrane for nickel removal from  aqueous solutions: Effects of concentration, solution pH and ionic strength, WIT Transactions on Ecology and the Environment, 163, 415-424, DOI: 10.2495/WM120371, EID: 2-s2.0-84867907638.
  61. Agboola O, Maree J P, Mbaya R, Kolesnikov A, Schoeman JJ and Zvinowanda C M (2013) Flux Decline and Rejection Characteristics During Nanofiltration of Iron and Deionized Water. Journal of Computational and Theoretical Nanoscience, 10, 54-58, https://doi.org/10.1166/jctn.2013.2656
  62. Mtombeni T, Maree J P, Zvinowanda C M, Zikalala N N, Makgati J M, Asante J K O, Oosthuizen F S, Jessen H and  Louw W J (2013)  Evaluation of the Performance of a new Freeze Desalination Technology – the HybridICE™. International Journal of Environmental Science &Technology, 10, 545-550, https://doi.org/10.1007/s13762-013-0182-7
  63. Maree J P, Mujuru M, Bologo V, Daniels N and Mpholoane D (2013) Neutralisation treatment of AMD at affordable cost,  Water SA, 39(2), 245-250, https://doi.org/10.4314/wsa.v39i2.7
  64. Adeniyi A, Maree J P Mbaya R K K, Popoola A P I, Oosthuizen F S, Mtombeni T, Zvinowanda C M (2013) HybridICE ® HIF filter: Principle and operation, WIT Transactions on Ecology and the Environment, 171, 259-268, DOI: 10.2495/WRM130231, EID: 2-s2.0-84878090754.
  65. Zvinowanda C M, Zikalala N N, Mtombeni T, Maree J P, Louw W J and Oosthuizen F S (2014) Process optimization of freeze desalination of brine using HybridICETM pilot plant, Desalination and Water Treatment, 52(34-36), 6315-6324, DOI: 10.1080/19443994.2013.822175
  66. Maila M D, Maree J P, Cele L M (2014) Acid mine water neutralization with ammonium hydroxide and desalination with barium hydroxide, Water SA, 40(3), 521-527, https://doi.org/10.4314/wsa.v40i3.16
  67. Masukume M, Onyango M S, Maree J P (2014) Sea shell derived adsorbent and its potential for treating acid mine drainage, International journal of mineral processing, 133, 52-50, https://doi.org/10.1016/j.minpro.2014.09.005
  68. Oluranti Agboola, Jannie Maree, Andrei Kolesnikov, Richard Mbaya, Rotimi Sadiku (2015) Env Chem Lett, Theoretical performance of nanofiltration membranes for wastewater treatment, 13(1), DOI 10.1007/s10311-014-0486-y
  69. Agboola O, Maree J, Mbaya R (2014) Characterization and performance of nanofiltration membranes, Environ Chem Lett (2014) 12, 241–255.
  70. Agboola O, Maree J, Mbaya, R, Zvinowanda  CM, Molelekwa GF, Jullok N, Van der Bruggen B, Volodine A Van Haesendonck C, (2014) Deposition of toxic metal particles on rough nanofiltration membranes,  Korean J. Chem. Eng., 31(8), DOI: 10.1007/s11814-014-0075-61dd
  71. G B Mohajane, J P Maree, N Panichev (2014) Treatment of iron(ii) rich acid mine water with limestone and oxygen, Water Science and Technology, 70(2) 209-217. DOI: 10.2166/wst.2014.178
  72. Adeniyi A, Maree J P, Mbaya R K K, Popoola A P I, Mtombeni T, and Zvinowanda C M (2014) HybridICE Filter: Ice Separation in Freeze Desalination of Mine Waste Waters, Journal of Water Science and Technology, 69.9. https://doi.org/10.2166/wst.2014.078
  73. Agboola O, Maree J P, Mbaya R, (2014) Characterization and performance of nanofiltration membranes, Environ Chem Lett, 12, 241–255, DOI 10.1007/s10311-014-0457-3
  74. Agboola O, Maree J P, Mbaya R, Zvinowanda CM, Molelekwa G F, Jullok N, Bruggen Bvd, Volodine A,  Haesendonck Cv (2014) Deposition of toxic metal particles on rough nanofiltration membranes, Korean J. Chem. Eng., DOI: 10.1007/s11814-014-0075-6.
  75. de Beer M, Maree J P, Liebenberg L and Doucet F J (2014) Conversion of calcium sulphide to calcium carbonate during the process of recovery of elemental sulphur from gypsum waste, Waste management, 34(11), DOI: 10.1016/j.wasman.2014.07.010.
  76. Siebrits R M, Winter K, Barnes J Dent M C, Ekama G, Ginster M, Harrison J, Jackson B, Jacobs I, Jordaan A, Kasan H C, Kloppers W, le Roux R, Maree J, Momba M N B, Munnik A V, O’Keeffe J, Schulze R, Silberbauer M, Still D, van Zyl J E (2014) Priority water research questions for South Africa developed through participatory processes, Water SA, 40(2), 199-209, DOI: 10.4314/wsa.v40i2.2, EID: 2-s2.0-84897056029.
  77. Rukuni T T, Maree J P, Carlsson F H H (2015) Investigation of carbonate dissolution for the separation of magnesium hydroxide and calcium sulphate in a magnesium hydroxide-calcium sulphate mixed sludge, Water SA, 41(2), 253–262, http://dx.doi.org/10.4314/wsa.v41i2.11
  78. Adeniyi A, Mbaya R K K, Popoola A P I, Maree J P, Zvinowanda C M (2015) Performance comparison of hydraulic and gravitation HybridICE filters in freeze desalination of mine waters, Water SA, WISA 2014 Special Edition 2015, 41(2), 273–278, http://dx.doi.org/10.4314/wsa.v41i2.13
  79. Adeniyi A, Maree J P, Mbaya R K K, Popoola A P I, Mtombeni T and Zvinowanda C M, (2015) HybridICE® filter: ice separation in freeze desalination of mine waste waters, Water Science and technology 1820–1827
  80. Agboola O, Maree J P, Mbaya R, KolesnikovA, Sadiku R, Verliefde A, and D’Haese A (2015) Microscopical characterizations of nanofiltration membranes for the removal of nickel ions from aqueous solution, Korean J. Chem. Eng., 32(4), 731-742, https://doi.org/10.1007/s11814-014-0290-1
  81. de Beer M, Doucet F J, Maree J P, Liebenberg L (2015) Synthesis of high-purity precipitated calcium carbonate during the process of recovery of elemental sulphur from gypsum waste, Waste Management, August. 619-627, https://doi.org/10.1016/j.wasman.2015.08.023
  82. Agboola O, Maree J P, Mbaya R, Kolesnikov A, Sadiku R, Verliefde A, and D’Haese (2015) Microscopical characterizations of nanofiltration membranes for the removal of nickel ions from aqueous solution, A Korean J. Chem. Eng., 32(4), 731-742, DOI: 10.1007/s11814-014-0290-1
  83. Motaung S R, Zvimba J N, Maree J P, Kolesnikov A V (2015) Thermochemical reduction of pelletized gypsum mixed with carbonaceous reductants, Water SA, 41(3), 369–374, https://doi.org/10.4314/wsa.v41i3.08
  84. Kefeni K K, Msagati T M, Maree J P, Mamba B B (2015) Metals and sulphate removal from acid mine drainage in two steps via ferrite sludge and barium sulphate formation, Minerals Engineering, 81, 79-87, DOI: 10.1016/j.mineng.2015.07.016, EID: 2-s2.0-84938405844.
  85. Adeniyi A., Mbaya R K K, Onyango M S, Popoola A P I and Maree J P (2016) Efficient suspension freeze desalination of mine wastewaters to separate clean water and salts. Environmental Chemistry Letters, 14(2), https://doi.org/10.1007/s10311-016-0562-6
  86. Fourie S C J S, van Tonder D, Maree J P (2016) Development of a Solar Desalination Plant, South African Journal of Geology 119(1), 39-46, DOI: 10.2113/gssajg.119.1.39.
  87. Bologo V, Maree J P and Wolkersdorfer V (2017) Application of calcium carbonate/hydroxide and barium carbonate for the desalination of mine water. IMWA, 36(2), 264-272.
  88. Akinwekomi V, Kefeni K, Maree J P, Msagati T A M (2016) Integrated acid mine drainage treatment using Mg(OH)2 or Mg(HCO3)2 and Ca(OH)2: Implications for separate removal of metals and sulphate, International Journal of Mineral Processing, 155, 83-90. doi: 10.1016/j.minpro.2016.08.009.
  89. Fourie C J S, van Tonder D, Maree J P (2016) Development of a solar desalination plant, South African Journal of Geology, 119 (1), 39-46 (March).
  90. Akinwekomi V, Maree J P and Wolkerdorfer C (2017) Using Calcium Carbonate/Hydroxide and Barium Carbonate to Remove Sulphate from Mine Water, Mine Water and the Environment, 26 April, DOI:  10.1007/s10230-017-0451-7
  91. Akinwekomi V, Maree J P, Zvinowanda C, Masindi V (2017) Synthesis of magnetite from iron-rich mine water using sodium carbonate. Journal of Environmental Chemical Engineering. 5, 2699-2707. http://dx.doi.org/10.1016/j.jece.2017.05.025
  92. Agboola1O, Mokrani T, Sadiku E R, Kolesnikov A, Olukunle O I, Maree J P (2017) Characterization of Two Nanofiltration Membranes for the Separation of Ions from Acid Mine Water, Mine Water Environ, 36(3), 401-408, DOI 10.1007/s10230-016-0427-z
  93. Zikalala,N, Maree J P, Zvinowandac C, Akinwekomi V, Mtombeni T, Monyatsi L M (2017) Treatment of sulphate wastewater by freeze desalination, Desalination and Water Treatment, 1 -10, doi:10.5004/dwt.2017.20927
  94. Masindi V, Akinwekomi V, Maree J P, Muedi, K L (2017) Comparison of mine water neutralisation efficiencies of different alkaline generating agents, Journal of Environmental Chemical Engineering, 5(7), 3903-3913, DOI: 10.1016/j.jece.2017.07.062, EID: 2-s2.0-85026533748.
  95. Masukume M and Onyango M S and Maree J P (2017) Performance characteristics of synthetic zeolite f9 in treating high iron and manganese acid mine drainage, Environmental Engineering and Management Journal, 16(10), 2255-2265, EID: 2-s2.0-85038633194.
  96. Tewo R K, Maree, J P, Ruto, S, Ruto, H L, Koech, L K (2017) The gypsum reduction process and its validation using the Mintek Pyrosim model, Chemical Engineering Communications, 204(12), 1412-1419, DOI: 10.1080/00986445.2017.1365064, EID: 2-s2.0-85032027956, URL
  97. Adeniyi A, Mbaya RKK, Onyango MS, Popoola API, Sethoga ME, Hlongwane VT, Mosesane JM, Olukunle OI, Maree J (2017) Water recovery and rejection of organochloride pesticides during reverse osmosis process. Accepted for publication in the Journal of Computational and Theoretical Nanoscience, https://doi.org/10.1166/jctn.2017.6927.
  98. Masukume M,  Onyango, M S,  Maree J P (2017) Performance characteristics of synthetic zeolite f9 in treating high iron and manganese acid mine drainage, Environmental Engineering and Management Journal, 16(10), 2255-2265.
  99. ​Akinwekomi, V., Maree, J. P., Zvinowanda, C. & Masindi, V. 2017. Synthesis of magnetite from iron-rich mine water using sodium carbonate. Journal of Environmental Chemical Engineering, 5, 2699-2707.
  100. Masindi, V., Akinwekomi, V., Maree, J. P. & Muedi, K. L. 2017. Comparison of mine water neutralisation efficiencies of different alkaline generating agents. Journal of Environmental Chemical Engineering, 5, 3903-3913.
  101. Masindi V, Ndiritu J G, Maree J P (2018) Fractional and step-wise recovery of chemical species from acid mine drainage using calcined cryptocrystalline magnesite nano-sheets: An experimental and geochemical modelling approach, Journal of Environmental Chemical Engineering, 6(2), 1634-1650, DOI: 10.1016/j.jece.2018.02.005.
  102. Masindi, V., Ndiritu, J. G. & Maree, J. P. 2018. Fractional and step-wise recovery of chemical species from acid mine drainage using calcined cryptocrystalline magnesite nano-sheets: An experimental and geochemical modelling approach. Journal of Environmental Chemical Engineering, 6, 1634-1650.
  103. Atta KPT, Maree JP, Onyango MS, Mpenyana-Monyatsi L and Mujuru M (2020) Chemical phosphate removal from Hartbeespoort Dam water, South Africa, Water SA 46(4) 610–614, https://doi.org.10.17159/wsa/2020.v46.i4.9074
  104. Forsido T, McCrindle RI, Maree J, Monyatsi ML (2020) Application of EAFDS/Lime Integrated System for the Removal of Cu and Mn from Industrial Effluent. Int J Water Wastewater Treat 6(3): dx.doi.org/10.16966/2381-5299.164
  105. Akinwekomi V, Maree J P, Masindi V, Zvinowanda C, M S, Foteinis S, Mpenyana-Monyatsi L, Chatzisymeon E (2020) Beneficiation of acid mine drainage (AMD): A viable option for the synthesis of goethite, hematite, magnetite, and gypsum – Gearing towards a circular economy concept, Minerals Engineering, Volume 148, Article 106169
  106. Khathutshelo Lilith Muedi, Vhahangwele Masindi, Johannes Philippus Maree and Hendrik Gideon Brink Rapid (2022) Removal of Cr(VI) from Aqueous Solution Using Polycationic/Di-metallic Adsorbent Synthesized Using Fe3+/Al3+ Recovered from Real Acid Mine Drainage, Minerals, 12, 1318, doi.org/10.3390/min12101318
  107. Elvis Fosso-Kankeu, Vhahangwele Masindi, Johannes Maree, Bhekie B Mamba, Thabo TI Nkambule 2022 Effective Attenuation of AMD Pollution Potential Using By-product from Municipal Wastewater Treatment, IMWA 243-249
  108. AL Tau, JP Maree, A Adeniyi and MS Onyango (2022) Treatment of Flue Gas Desulphurisation effluent with Freeze Crystallization, International Institute of Biological Chemical and Environmental Engineering (IICBEE), Johannesburg, South Africa, Nov. 28-29, ISBN: 978-989-9121-14-0, https://doi/10.17758/IICBE4.C1122223, p60-75.
  109. Mogashane, T.M.; Maree, J.P.; Mujuru, M.; Mphahlele-Makgwane, M.M.; Modibane, K.D. Ferric 2023, Hydroxide Recovery from Iron-Rich Acid Mine Water with Calcium Carbonate and a Gypsum Scale Inhibitor. Minerals, 13, 167-190. https://doi.org/10.3390/min13020167
  110. AL Tau, JP Maree, SL Letjiane, A Adeniyi and MS Onyango, 2023 Pigment Recovered from Iron Rich Mine Water for use in Coloured Concrete, 36th KUALA LUMPUR International Conference on “Chemical, Biological, Environmental & Natural Resources” (CBENR-23May 31-June 2, URUAE Kuala Lumpur (Malaysia)

Conference Proceedings (peer reviewed)

  1. Maree, J.P. Strydom, W.F. van Vuuren, L.R.J. 1982. Kinetics of calcium sulphate crystallization, Proc. of Symposium on Water Research, Selected in‑depth studies, CSIR Conference Centre, Pretoria, 18 November.
  2. Maree, J.P. and Strydom, W.F. 1984. Biological sulphate removal in an upflow packed bed reactor, Proc. of Symposium on Purification and Distribution of Water, CSIR Conference Centre, Pretoria, 18 October.
  3. Maree, J.P., Wagner, J.C. and Strydom, W.F. 1985. Sulphate removal from mining effluent, Colloquium on treatment and re‑use of water in the mining and metallurgical industry, MINTEK, Randburg, 9 & 10 May.
  4. Maree, J.P., Gerber, A., McLaren, A.R. and Hill, E. 1986. Biological treatment of mining effluents, Proc. of the 41 st Ind. Waste Conf., Purdue Univ., West Laffayette, 13‑15 May, 147‑155.
  5. Maree, J.P., Gerber, A. and Hill, E. 1986. Biological treatment of Gold Mining Effluents, Proc. of the GOLD 100 Conference, Johannesburg, 15‑19 September, 391‑403.
  6. Maree, J.P., Gerber, A., Woodhouse, N.C., Mostert, E.S. and Van Riet, C. 1986. Biological sulphate and selenium removal from industrial wastes and concomitant recovery of valuable products, Proc. of the Anaerobic Digestion Symposium, Bloemfontein, 22‑24 September.
  7. Maree, J.P., Gerber, A. and Hill, E. 1986. An integrated process for biological treatment of sulphate containing industrial effluents, Proc. of the Ind. Wastes Symp., Los Angeles, WPCF, 384‑398.
  8. Maree, J.P. and Hill, E. 1988. Biological removal of sulphate from industrial effluents and concomitant production of sulphur, Proc. of the 14th IAWPRC Conference, Brighton, England, 17‑23 July, 265‑276. Water Sci. Technol., 21, 265‑276.
  9. Maree, J.P., Cole, C.G.B., Gerber, A. and Barnard, J.L. 1989. Treatment of gelatine factory effluents, Proc. of the 2nd Anaerobic Digestion Symposium, University of the Orange Free State, Bloemfontein, 18‑20 Sept.
  10. Marchant PB, Lawrence RW, Dods D and Maree JP (1989) Integrated biological process for complex sulphides, Proceedings of the International Symposium on Processing of Complex Ores, Halifax, August 20–24, Proceedings of Metallurgical Society of Canadian Institute of Mining and Metallurgy https://doi.org/10.1016/B978-0-08-037283-9.50045-7
  11. Schutte, C.E. and Maree, J.P. 1989. Autotrophic sulphate‑reduction using hydrogen as energy source, Proc. of the 2nd Anaerobic Digestion Symposium, University of the Orange Free State, Bloemfontein, 18‑20 Sept.
  12. Bosman, D.J., Clayton, J.A., Maree, J.P. and Adlem, C J L. 1990. Removal of sulphate from mine water with barium sulphide, Proceedings of the Acid mine Water in Pyritic Environments, Lisbon, Portugal, 16 to 19 September.
  13. Clayton, J.A., de Villiers, M.G., Maree, J.P. and Pienaar, G. 1990. Calcium carbonate neutralization of acidic effluents in a fluidised bed, Proceedings of The Southern Africa Industrial Water Symposium, Indaba Hotel, Witkoppen, Johannesburg, 27‑28 September.
  14. Du Preez, L.A., Odendaal, J.P., Maree, J.P. and Ponsonby, M. 1990. Biological removal of sulphate from industrial effluents using producer gas as energy source, Proceedings of The Southern Africa Industrial Water Symposium, Indaba Hotel, Witkoppen, Johannesburg, 27‑28 September.
  15. Maree, J.P., Hulse, G., Dods, D. and Schutte, C.E. 1991. Pilot plant studies on biological sulphate removal from industrial effluent, Proceedings of the 15 th IAWPRC Conference, Kyoto, Japan, 29 July ‑ 3 Aug., 1293‑1300, Wat. Sci. Tech., 23, 1293‑1300.
  16. Adlem, C.J. Maree, J P and du Plessis. 1991. Treatment of sulphate‑rich effluents with the barium hydroxide process and recovery of valuable by‑products, Proc. of the Int. Mine Water Conf., Ljubliana, Yugoslavia. Sept.
  17. Du Preez, L.A., Maree, J.P. and Odendaal, J.P.?? 1991. Biological sulphate removal from Mining effluents by utilising producer gas as energy source, Proc. of the Int. Mine Water Conf., Ljubliana, Yugoslavia. Sept.
  18. Jackson‑Moss, C., Maree, J.P. and Wootton, S. 1991. Treatment of bleach plant effluent with the biological granular activated carbon process. Proc. of the WISA Conference, International Trade Centre, Johannesburg, May.
  19. Du Plessis, P., Maree, J.P. and Jackson‑Moss C. 1991. Anaerobic treatment of gelatine factory effluents. SAFoST (Food) Conference, Johannesburg, August.
  20. Maree, J.P., du Plessis, P and Mackintosch, G. 1991. Neutralisation of acid mine water with calcium carbonate.  Proc. of the 6th National Meeting of the SA Institution of Chemical Engineers, Durban, 7‑9 Aug.
  21. Jackson‑Moss, C. and Maree, J.P. 1991. Biological sulphate removal from industrial effluents using molasses as energy source ‑ laboratory and pilot plant investigations. Proc. of the Commonwealth Engineering Council Meeting, 12‑18 September, Mont Choisy, Mauritius.
  22. van der Walt, C.J. and Maree, J.P. 1991.  Biological sulphate removal from industrial effluents using molasses as energy source. Laboratory and pilot plant investigations, Seminar on Design and Operation of Industrial and Small Community Waste Water System, Mont Choisy, Mauritius, 16 – 17 September.
  23. Maree, J.P. and du Plessis. 1992. Treatment of acidic effluents with limestone instead of lime.  Proc. of the 16 th Biennial IAWPRC Conference, Washington, 24 ‑ 30 May.
  24. Jackson‑Moss, C., Maree, J.P. and Wootton, S. 1992. Treatment of bleach plant effluent with the biological granular activated carbon process. Proc. of the 16 th Biennial IAWPRC Conference, Washington, 24 ‑ 30 May.
  25. du Preez L.A. and Maree, J.P. 1994.  Pilot-scale biological sulphate removal utilizing producer gas as energy source, Proc. of Seventh International Symposium on Anaerobic Digestion, Cape Town, 23-27 January 1994.
  26. C J L Adlem, J P Maree and R I McCrindle, 1994. Water softening in the barium sulphide process for sulphate removal, 5th International Mine Water Congress, International Mine Water Association, Nottingham, 18-23 September.
  27. S Dill, L du Preez, M Graff and J Maree, 1994. Biological sulphate removal from acid mine drainage utilizing producer gas as carbon- and energy source – Process limitations and their resolution, Proc. of 5th International Mine Water Congress, International Mine Water Association, Nottingham, 18-23 September.
  28. G J van Tonder, J P Maree and P Millard, 1994. Neutralization of acid coal mine water with dolomite in a fluidised-bed reactor, Proc. of 5th International Mine Water Congress, International Mine Water Association, Nottingham, 18-23 September.
  29. Maree, J P, Van Tonder, G J, Millard, P and Erasmus, C. 1996.  Pilot scale neutralisation of underground mine water. Proc. of the Biennial IAWQ Conference, Singapore, 23 – 26 June.
  30. Maree, J P, Dafana, D, Mbonjani, D, Van Tonder, G J, and Millard, P. 1996.  Development of a limestone process to neutralise acid effluents originates from a phosphate fertilizer manufacturer.  Proc. of the Biennial WISA Conference, Conference Proceedings, Volume 1, Port Elizabeth, 20 – 23 May 1996. p 1-10.
  31. Van Tonder, G J, Millard, P, Maree, J P. and Schutte, C.J. 1996.  The effect of cations on the kinetics of limestone neutralisation of acid water.  Biennial WISA Conference, Conference Proceedings, Volume 2, Port Elizabeth, 20 – 23 May, p 1-12.
  32. Dill, S and Maree, J P.  1996.  Biological removal of sulphate from mine water.  Biennial WISA Conference, Port Elizabeth, 20 – 23 May.
  33. Maree, J.P., Strydom, W.F. and de Beer, M. 1997.  Integrated iron(II) oxidation and limestone neutralisation of acid mine water, Proc. of the International Association on Water Quality (IAWQ), Specialised Conference on Chemical Process Industries and Environmental Management, Cape Town, South Africa, 6 – 10 September, Paper 7.4
  34. Maree, J. P. Dingemans, D. van Tonder, G. J. and Mtimkulu, S. 1998.  Biological iron(II) oxidation as pre-treatment to limestone neutralisation of acid water, Proc. of the IAWQ 19 th Biennial International Conference, Vancouver, Canada, to be held from 21 – 26 June.
  35. Maree, J.P., de Beer, M. Strydom, W.F., and Christie, A.D.M. 1998.  Limestone neutralisation of acidic effluent, including metal and partial sulphate removal, Proc. of the International Mine Water Association Symposium, Johannesburg, South Africa, 6 – 13 September, 449-460.
  36. Greben, H.A., Maree, J.P., Singmin, Y. and Mnqanqeni, S.  1999.  Biological Sulphate removal from acid mine effluent, using ethanol as carbon and energy source, Proc. of the Asian Waterqual’99, the 7th IAWQ Asia_Pacific Regional Conference, 18-20 October.
  37. Adlem, C.J.L., Maree, J.P., du Plessis, M. and Peek, P. 2000. Control of acid generation in coal discard dumps using liming plant sludge, Proc. Of the WISA 2000 Conference, Sun City, South Africa, 28 May-1 June.
  38. Van Tonder, G.J., Theron, D.J. and Maree, J.P. 2000. Cost optimisation of the water management strategy by steady-state modelling of the water network of a copper/nickel mine and processing plant, Proc. Of the WISA 2000 Conference, Sun City, South Africa, 28 May-1 June.
  39. Greben, H.A and Maree, J.P. 2000. The biological sulphate and sulphide removal rates in a single stage fluidised bed, a packed bed and a complete mixed reactor with and without a clarifier Proc. Of the WISA 2000 Conference, Sun City, South Africa, 28 May-1 June.
  40. van Zyl, H.C, Maree, J.P., van Niekerk, A.M., van Tonder, G.J., and Naidoo, C.  2000.  Collection, treatment and re-use of mine water in the Olifants River Catchment, Proceedings of the 12 th Intenational Conference on Coal Research, Sandton Convention Centre, Sandton, South Africa.
  41. Greben, H.A., Maree, J.P. and Mnqanqeni, S. (2000). Comparison between sucrose, ethanol and methanol as carbon and energy source for biological sulphate reduction using the single-stage completely-mixed reactor configuration, Internatinal Symp. Environmental Biotechnology, Noordwijkerhout, The Netherlands, 10-12 April.
  42. Maree, J.P., Greben, H. and Mnqanqani, S. 2000.  Biological removal of sulphate and sulphide using sugar as energy source, Proceedings of the WEFTEC2000 Conference (CD Rom), Session 38, Anaheim Convention Center, USA, 14 – 18 October.
  43. Greben, H.A., Maree, J.P. and Meyer, L.L.  2000. The effect of the ethanol concentration and the Hydraulic Retention Time on the sulphate reduction and sulphide oxidation rates, Proc. Of the BioY2K combined millennium, section Biological treatment of mine drainage wastewaters, Meeting, Grahamstown 26-27 January.
  44. Maree J P, Greben H and Mnqanqeni S (2000) Simultaneous removal of sulphate and sulphide with the biosure process from coal acid mine drainage, WISA 2000 Biennial Conference, Sun City, South Africa, 28 May to 1 June
  45. Maree, J.P., Strobos, G., Greben, H., Netshidaulu, E., Hlabela, P., Steyn, E., Günther, P. and Christie, A.  2001.  Biological treatment of mine water using ethanol as energy source, Proceedings of the Conference on Environmentally Responsible Mining in Souther Africa, Chamber of Mines of South Africa, Muldersdrift, South Africa, 25 – 28 Sept., 4B-31 – 4B-42.
  46. Geldenhuys, A.J., Maree, J.P., de Beer, M. and Hlabela, P. 2001. An integrated limestone/lime process for partial sulphate removal, Conference on Environmentally responsible mining in Southern Africa, Proceedings of the Conference on Environmentally Responsible Mining in Souther Africa, Chamber of Mines of South Africa, Muldersdrift, South Africa, 25 – 28 Sept, 7A-14 – 7A-27.
  47. Maree, J.P., Strobos, G., Greben, H., Christie and Günther, P.  2001.  Treatment of acid leachate from coal discard, The Seventh International Conference on Solid Waste Technology and Management, Philadelphia, 21–24 Oct.
  48. Maree, J.P., de Beer, M., Geldenhuys, A.J., Strobos, G., Judels, C. and Dreyer, J. 2002 Comparison of the combined limestone/lime and combined limestone/biological sulphate removal processes for treatment of acid mine water, Hardrock Mining 2002 Conference, Westminster, 7 – 9 May.
  49. H.A. Greben, H. Bologo, and J.P Maree 2002. The effect of different parameters on the biological volumetric and specific sulphate removal rates. Wisa 2002, Durban S.A 19-23 May
  50. H.A. Greben and J.P Maree 2002.  Partial Sulphide oxidation in anaerobic sulphidogenic reactor. Wisa 2002, Durban S.A 19-23 May
  51. R. Nengovhela, M. de Beer, H.A. Greben, J.P Maree and C.A. Strydom 2002. Iron (II) oxidation to support limestone neutralization in acid mine water. Wisa 2002, Durban S.A 19-23 May
  52. G Strobos, J P Maree, C Adlem, N Melatchi, A Christie and P Günther, 2002. A cost effective limestone makeup and dosing system, Wisa 2002, Durban, http://hdl.handle.net/10204/2519ISBN Number: 1-86845-844-X
  53. A.J. Geldenhuys, J.P. Maree, C. Adlem, M. de Beer & P. Hlabela 2002 An Integrated Limestone/Lime Treatment Process for Neutralisation of AMD and Partial Sulphate Removal: Economic and Environmental Motivation for the Development of Alternatives for Acid and Sulphate Removal, 5th Annual Industrial Water Management & Treatment Symposium organized by: Institute for International Research,15 – 17 May 2002, Johannesburg International Airport – Holiday Inn, South Africa.
  54. J P Maree, P Günther1 and G Strobos, 2003. Optimizing the effluent treatment at a coal mine by process modelling, Sudbury 2003 Mining and the Environment, 28 th CLRA Meeting, Laurentian University, Sudbury, 25 to 28 May 2003.
  55. J P Maree, M J Hagger1, G Strobos, P Hlabela, H Cronjé2, A van Niekerk3, and A Wurster3 and R Nengovhela, 2003. Neutralization of acid leachate at a nickel mine with limestone, , Sudbury 2003 Mining and the Environment, 28 th CLRA Meeting, Laurentian University, Sudbury, 25 to 28 May 2003.
  56. A.J. Geldenhuys, J.P. Maree, W.J. Fourie, J.J. Smit, B. Bladergroen, M Tjati 2003, Acid Mine Draiange Treated Electrolytically for Recovery of Hydrogen, Iron(II) Oxidation and Sulphur Production, Proceedings of the 8 th International Mine Water Association (IMWA) Congress, Johannesburg, 20 -25 Oct.
  57. E Eloff, HA Greben, JP Maree, BV Radebe, RE Gomes, 2003. Biological Sulphate Removal Using Hydrogen As The Energy Source, Proceedings of the 8 th International Mine Water Association (IMWA) Congress, Johannesburg, 20 -25 Oct.
  58. P Günther, J P Maree, G Strobos, J S Mtimikulu, 2003. Neutralisation of Acid Leachate in a Coal Processing Plant with Calcium Carbonate, Proceedings of the 8 th International Mine Water Association (IMWA) Congress, Johannesburg, 20 -25 Oct., 367-382.
  59. H Greben and J P Maree, 2003. Biological sulphate and metal removal from a copper and nickel mine effluent, Tenth annual conference on Tailings and Mine waste, October 12-15, 2003, Colorado State University, Vail, Colorado, USA.
  60. Greben H A, Kahlo D M, Maree J P and Hagger M., 2003. The biological treatment of a nickel and copper mine effluent to render it suitable for irrigation of agricultural crops, Presented as an oral paper at the IWA: Water: Key to Sustainable development in Africa, Cape Town, 14-17 September, 2003.
  61. MareeJ P, Gerber A, Hill E (2004) Biological treatment of gold mining effluents, GOLD 100, Proceedings of the International Conference on Gold.; Johannesburg, S Afr; Editors: King R.P.,Wagner H.,Fivaz C.E.,Gafner G., Sponsors: South African Inst of Mining & Metallurgy, Johannesburg, S Af,Chamber of Mines of South Africa, S Afr,Council for Mineral Technology, S Afr,Univ of South Africa, Sch of Business Leadership, S Afr, Publisher: South African Inst of Mining & Metallurgy (South African Inst of Mining & Metallurgy Symposium Series S8),Johannesburg, S Afr, ISBN: 0620097760
  62. Shelp G, Seed L, de Beer M, Maree J P (2004) Capacitive Deionization for the Removal of Ionic Contaminants from Water, Mali Symposium
  63. J P Maree, P Hlabela, A J Geldenhuys, N Mbhele and T Nevhilaudzi, 2004. Treatment of mine water for sulphate and metal removal using barium sulphide, Waste Management, Emissions & Recycling in the Metallurgical & Chemical Process Industries Conference, Mintek Conference Centre, Randburg, 18-19 March.
  64. M de Beer, J P Maree, M J Hagger, G Strobos, S Stroebel and R Gomes, 2004.  Neutralization of acid water with powder limestone, Waste Management, Emissions & Recycling in the Metallurgical & Chemical process Industries Conference, Mintek Conference Centre, Randburg, 18-19 March.
  65. J P Maree, I Netshidaulu, G Strobos, R Nengovhela, and A J Geldenhuys, 2004.  Integrated process for biological sulphate removal and sulphur recovery, Proc. Of the WISA 2004 Conference, Cape Town, 2 – 6 May.
  66. Nengovhela, N R, Strydom, C A, Maree, J P and Greben, H A (2004) Chemical and Biological oxidation of iron in Acid Mine Water, Proc. Of the WISA 2004 Conference, Cape Town, 2 – 6 May.
  67. E Eloff et al, 2004. 2 nd IWA (International Water Association) Young Researchers Conference, Wageningen University, Wageningen, The Netherlands.
  68. Greben, H.A., Bologo, H, Maree, J.P. and Strobos, G.(2004) High sulphide concentrations tolerated by sulphate reducing bacteria. Wisa Biennial Conference & Exhibition, Cape town International Convention Centre 2-6 May 2004.
  69. Greben, H.A and Baloyi, ML (2004). The beneficial use of a bio waste product in the biological sulphate removal technology. Wisa Biennial Conference & Exhibition, Cape Town International Convention Centre 2-6 May 2004
  70. Greben, H.A., Tjatji, M and Talma,S (2004). Biological denitrification using saw dust as the energy source. Wisa Biennial Conference & Exhibition, Cape Town International Convention Centre 2-6 May 2004
  71. Greben, H.A., Tjatji, M and Talma,S (2004). A cost effective denitrification system using saw dust as the energy source, treating ground water for a sustainable drinking water source in rural areas of South Africa. Anaerobic Digestion, 2004, Montreal, August 29 September, 2004.
  72. Greben, H.A., Tjatji, M and Maree, J.P. (2004) Biological sulphate reduction at different feed cod/so4 ratios using propionate and acetate as the energy source.  8th IMWA Conference Newcastle upon Thyne, England
  73. Eloff, E., Greben, H.A., Maree, J.P., Radebe, B.V.  (2004). Biological sulphate removal using a mixture of hydrogen and carbon dioxide gas as the energy/carbon source. Proc. IWA YRC 2004 May 2004 at the Agricultural University Wageningen, The Netherlands, p307-317.
  74. Clifford, G, Greben, H.A., Maila, P and Randima, P. 2005. The beneficial use of Waste Activated Sludge for the degradation of soil contaminated hydrocarbons. IWA conference, Sandton Convention Centre Johannesburg, 9-12 August 2004.
  75. Greben, H.A., Matshusa, P and Maree, J.P. 2005. Sulphate, metal and acididty removal from three different mine waters, operating the biological sulphate removal technology. IMWA conference, Oviedo, Spain 5-8 September, 2005
  76. Maree, J.P., Theron, D., Nengovhela, R. and Hlabela, P. (2005) Sulphur from smelter gasses and sulphate-rich effluents, The Journal of the South African Institute of Mining and Metallurgy, 105, 1-4?
  77. Hlabela, P.S., Maree, J.P. and Barnard J. (2005) Barium carbonate process for sulphate and metal removal from mine water, IMWA conference, Oviedo, Spain, 5-8 September.
  78. R. Nengovhela, J. P. Maree, D. Theron, C. A. Strydom (2005) Recovery of sulphur from waste gypsum, The International Conference on Solid Waste Technology and Management, Philadelphia, Date.
  79. Clifford, G, Greben, H.A., Maila, P and Randima, P. 2005. The beneficial use of Waste Activated Sludge for the degradation of soil contaminated hydrocarbons. IWA conference, Sandton Convention  Centre Johannesburg, 9-12 August 2004.
  80. Greben, H.A., Matshusa, P and Maree, J.P. 2005. Sulphate, metal and acidity removal from three different mine waters, operating the biological sulphate removal technology. IMWA conference, Oviedo, Spain 5-8 September, 2005
  81. Maree J, 2008, Recovery of drinking water from acid mine drainage, Environmental Management in Mining, Citigate Hotel, Perth, Australia, 12 – 13 February
  82. Motaung, S and Maree, J P 2008, Recovery of drinking water, sulphur, calcium carbonate, lime and metal compounds from acid mine drainage using limestone and coal as raw material, WISA 2008 Biennial Conference, Sun City, 18-22 May.
  83. Bologo, L T and Maree, J P 2008, Iron (II) oxidation using a sequence batch reactor, WISA 2008 Biennial Conference, Sun City, 18-22 May.
  84. Motaung J. Maree L. Bologo M. de Beer V. Radebe 2008. Recovery of Reusable Water from Sulphate-Rich Industrial Effluents, Mineclosure 2008 3 rd International Seminar and Workshops, 13 – 17 Oct
  85. Jac Wilsenach, Marinda de Beer, Solly Motaung, Lucky Bologo, Vivian Redebe, Matlhodi Moalusi, Fritz Carlsson, John Clayton, Ryneth Nengovhela, Dieks Theron  and Jannie Maree (2008). Recovery of drinking water and by-products from goldmine effluents via alkali-barium and calcium processing  CSIR Outcomes Conference, CSIR Conference Centre, Pretoria, 17 – 18 November
  86. Mbhele N R,  van der Merwe W, Maree JP and Theron D (2009) Recovery of sulphur from waste gypsum International mine water conference, 23 October, Proceedings ISBN number: 978-0-9802623-5-3, Pretoria, South Africa
  87. V Bologo, J P Maree, FHH Carlsson, C M Zvinowanda (2009) International Mine Water Conference, Treatment of acid mine drainage using magnesium hydroxide, 2009 International Mine Water Conference, CSIR Conference Centre, Pretoria, 19-23 October.
  88. M de Beer, J. P Maree, J. Wilsenach, S Motaung, L Bologo, V Radebe, 2009  Acid Mine Water Reclamation using the ABC Process, International Mine Water Conference, CSIR Conference Centre, Pretoria, 19-23 October
  89. Mbhele, R van der Merwe, W Maree, J P and Theron D J (2009) International Mine Water Conference, The recovery of sulphur and calcium carbonate from waste gypsum, International Mine Water Conference, CSIR Conference Centre, Pretoria, 19-23 October.
  90. Joubert, H J, Wilken, J W and Maree, J P (2009) Challenges for the full-scale implementation of biological sulphate reducing processes, International Mine Water Conference, CSIR Conference Centre, Pretoria, 19-23 October.
  91. Bologo, V, Maree, J P and Louw, W J (2010). Treatment of Mine Water for Sulphate and Metal Removal Using Magnesium hydroxide and Barium Hydroxide, WISA Biennial Conference, Durban International Conference Centre, 18-22 April.
  92. Mtombeni, T, Zvinowanda C M, Maree J P, Oosthuizen F S and Louw W J (2010). Brine Treatment using Freeze Desalination, WISA Biennial Conference, Durban International Conference Centre, 18-22 April.
  93. De Beer, M, Maree, J P, Wilsenach , J, Motaung, S, Bologo, L, Radebe, V (2010) Acid mine water reclamation using the ABC Process, International Mine Water Conference, Sydney, Nova Scotia, Canada, 115-118.
  94. Sheila Ruto, Jannie P. Maree, Caliphs M. Zvinowanda, Wynand J. Louw and Andrei V. Kolesnikov, 2011, Thermal studies on gypsum in a pilot-scale, rotary kiln, Water in the South African Minerals Industry Conference, The Southern African Institute of Mining and Metallurgy, Ingwenyama Conference & Sport Resort, White River, 15 – 17 February.
  95. T Mtombeni, J P Maree, C M Zvinowanda, J K O Asante, F Oosthuizen and WJ Louw, 2011 HybridICE™ freeze desalination technology for brine treatment, Water in the South African Minerals Industry Conference, The Southern African Institute of Mining and Metallurgy, Ingwenyama Conference & Sport Resort, White River, 15 – 17 February.
  96. Sheila Ruto, Jannie Maree, Caliphs Zvinowanda, Andrei Kolesnikov, Wynand Louw, 2011 Thermal studies on barium sulphate in a pilot scale, rotary kiln, 9th International Conference on Clean Technologies for the Mining Industry, Sheraton Santiago Hotel & Convention Center, Chile, 10 – 12 April 2011.
  97. Tabani Mtombeni, Jannie Maree and Caliphs Zvinowanda, Joseph Asante, Frederick Oosthuizen, Wynand Louw, 2011 Brine treatment by freeze desalination using the HybridICE™, 9th International Conference on Clean Technologies for the Mining Industry, Sheraton Santiago Hotel & Convention Center, Chile, 10 – 12 April 2011.
  98. Zvinowanda, C., Maree, J.P., Ruto, S. Thermal conversion of gypsum to calcium sulphide in a graphite tube based rotary kiln. 43rd World Congress IUPAC 2011, 30 July-6 August 2011, San Juan, Puerto Rico, Puerto Rico Convention Centre.
  99. Bologo, V, Maree J.P., and Carlsson F.H.H. (2012) Neutralization of acid mine drainage with magnesium bicarbonate, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  100. Bologo, J.P. Maree and F.H.H. Carlsson. Treatment of acid mine drainage using magnesium hydroxide and barium hydroxide. The 27th International Conference on Solid Waste Technology and Management, Philadelphia, USA, 11-14 March 2012.
  101. Chivovo, T, Maree, J P and Zvinowanda, C M (2012) Separation of magnesium hydroxide and barium sulphate, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  102. Maree, J P, Louw, W J and Carlsson, F H H (2012), Four point plan for the acid mine water problems of South Africa, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  103. Masukume, M, Maree, J P, Joubert, H, Regina, M and Zvinowanda, C M (2012) Processing of alkali metal sulphide, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  104. Mtombeni, T, Maree, J P, Zvinowanda, C M, Asante, J K O, Oosthuizen, F S, Jessen, H and Louw, W L (2012) Harnessing refrigeration waste heat to achieve zero liquid discharge by Integrated HybridICE™ technology, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  105. Ruto, S, Maree, J P, Srivastava, P and Louw, W J (2012) Thermal   processing of alkali metal sulphates to alkali metal sulphides in a pilot scale, rotary kiln, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  106. Rukuni, T T, Maree, J P and Zvinowanda, C M (2012) Recovery of calcium carbonate from a barium sulphate-calcium carbonate mixed sludge, The Twenty-Seventh International Conference On Solid Waste Technology And Management March 11 – 14, 2012 Philadelphia, PA U.S.A. 11 – 14 March 2012.
  107. Rukuni, T T, Maree, J P and Zvinowanda, C M (2012), Separation of magnesium hydroxide and barium sulphate produced during the desalination of acid mine drainage, WISA Biennial Conference, Cape Town International Conference Centre, 5 – 9 May.
  108. Malisa, R; Maree, JP, Hardwick, E; Oosthuizen, F.S. 2013. Resin Freeze desalination process for acid recovery, Reliable mine water technology, IMWA, 2013, Golden In: Brown, A.; Figueroa, L. & Wolkersdorfer, Chr: Reliable Mine Water Technology (Vol I) pp. 655 – 660; Denver, Colorado, USA (Publication Printers).
  109. Adeniyi, A., Maree, J. P., Mbaya, R.K.K. and Popoola, A.P.I. 2013. HybridICE™ filter design in freeze desalination of mine water. – In: Brown, A.; Figueroa, L. & Wolkersdorfer, Chr: Reliable Mine Water Technology (Vol I) pp. 507 – 513; Denver, Colorado, USA.
  110. Makgae, M., Maree, J.P., Annandale, J. 2013. Neutralized mine water for irrigation – cost and feasibility study, – In: Brown, A.; Figueroa, L. & Wolkersdorfer, Chr: Reliable Mine Water Technology (Vol I) pp. 507 – 513; Denver, Colorado, USA (Publication Printers).
  111. Adeniyi, A, Maree, J. P., Mbaya, R. K. K., Popoola, A. P. I., Oosthuizen, F. S., Mtombeni,T., and Zvinowanda, C. M. 2013. HybridICE® HIF Filter: Principle and Operation, Water Resources Management VII. WIT Transactions on Ecology and The Environment, Vol. 171, © 2013 WIT Press. www.witpress.com, ISSN 1743-3541 (on-line) doi: 10.2495/WRM130231.
  112. Johnson D, Maree J P (2014) Industrial CO2 footprint reduction by utilization in AMD treatment and Gypsum processes, Conference: Southern African Energy Efficiency Convention, Emperor’s Palace, Johannesburg
  113. Adeniyi  A, Maree J P, Mbaya R K K, Popoola A P I and Zvinowanda C M (2014) Performance comparison of hydraulic and gravitation HybridIce filters in freeze desalination of mine waters, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  114. Mohajane G B, Maree J P, Panichev N and Louw W J (2014) Treatment of alkaline mine water with hydrogen peroxide, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  115. Bologo V, Maree, J P, Carlsson, F H H, Louw W J (2014) Application of calcium carbonate/hydroxide and barium carbonate for desalination of mine water (ABCD process), Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  116. Agboola O, Maree J P, Mbaya R, Kolesnikov A and Schoeman J J (2014) Rejection behavior of heavy metals ions from synthetic wastewater containing NiSO4, MgSO4, CoSO4, MnSO4 and FeSO4 salts by a nanofiltration membrane, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May. 
  117. Malisa R, Maree J P, Kefeni K K and Hardwick E (2014) Recovery of nitric acid using the resin freeze desalination process, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  118. Motaung S R, Zvimba J N, Maree J P and Kolesnikov A V (2014) Thermochemical reduction of pelletized gypsum, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  119. Mtombeni, T, Maree J P, Zvinowanda C M, Asante J K O and Louw W J (2014) Improved freeze desalination process for recovery of water and salts from brines, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  120. Tewo R K, Maree J P, Kolesnikov A V, Ruto S J and Mohajane G B (2014) The effect of hydrogen sulphide gas on the dissolution of calcium sulphide in the production of calcium carbonate and elemental sulphur. Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  121. Rukuni T T, Maree J P, Carlsson F H H and Fourie C J S (2014) Investigation of carbonate dissolution for the separation of magnesium hydroxide and calcium sulphate in a magnesium hydroxide-calcium sulphate mixed sludge, Proceedings of the 2014 WISA Biennial Conference, Mbombela, 25-29 May.
  122. Johnson D and Maree J P (2014) Industrial CO2 footprint reduction by utilization in AMD treatment and Gypsum processes, Southern African Energy Efficiency Convention, At Emperor’s Palace, Johannesburg, November.
  123. Akinwekomi V, Maree J P, Strydom A, and Zvinowanda C (2016) Recovery of magnetite from iron-rich mine water, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  124. Zikalala N, Maree, J P, Mtombeni, T, Monyatsi, L and Fourie, C J S (2016) Sodium sulphate behaviour during freeze desalination, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  125. Tewo R K, Maree J P, Ruto S, V Bologo V and Kolesnikov A V (2016) Chemical desalination of mine water with by-product recovery: A feasibility study through modelling, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  126. Ruto S, Maree J P, M de Beer, M, Hardwick E, Hardwick J, Kolesnikov A, Tewo R K, Fourie C J S and Steytler A (2016) Chemical/resin desalination of mine water, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  127. Mtombeni, T, Maree J P, Zikalala N and Fourie C J S (2016) Desalination with a combined membrane filtration/freeze desalination process, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  128. Rukuni T, Maree J P and Carlsson F (2016) An integrated low cost solution to the mine water problem in South Africa, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  129. Tewo, R P, Maree, J P, Ruto, S, Bologo, V and Kolesnikov, A V (2016) Chemical desalination of mine water with by-product recovery: A feasibility study through modelling, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  130. Kekana F, Maree J P, Ntumba N, van der Walt B, Louw W, Akinwekomi V,  Maree A J (2016) Simulation of the neutralization of iron(ii)-rich acid mine water with limestone and lime, and considerations for process optimization, Proceedings of the 2016 WISA Biennial Conference, Durban, 15-19 May.
  131. Akinwekomi V, Maree JP, Strydom A and Zvinowanda CM. (2016) Recovery of Ferrite from Iron(II)-rich mine water. Poster presentation, EDS Desalination for the Environment, Clean Water and Energy, 22-26 May 2016, Rome, Italy.
  132. Maree J P and Mtombeni T (2017) Treatment of brine for the recovery of drinking water, calcium carbonate, and sodium sulphate, Water 2017 Conference organized by The South African Institute of Mining and Metallurgy & Mine Metallurgical Managers Association, Emperors Palace, Johannesburg, 10 – 11 July
  133. Zikalala NN, Maree JP, Zvinowanda C, Akinwekomi V, Mtombeni T and Mpenyana-Monyatsi L (2017). Treatment of Sulphate Wastewater by Freeze Desalination. Oral presentation, EDS Desalination for the Environment, Clean Water and Energy, 22-26 May Rome, Italy.
  134. Vuuren D S, Maree J P (2018) A Novel Process to Recover Sulfur, Lime and Rare Earths from Gypsum” in Beneficiation of Phosphates VIII, Dr. Patrick Zhang, Florida Industrial and Phosphate Research Institute, USA Professor Jan Miller, University of Utah, USA Professor Laurindo Leal Filho, Vale Institute of Technology (ITV), Brazil Marius Porteus, Foskor-Mining Division, South Africa Professor Neil Snyders, Stellenbosch University, South Africa Mr. Ewan Wingate, WorleyParsons Services Pty Ltd., Australia Prof. Guven Akdogan, Stellenbosch University, South Africa Eds, ECI Symposium Series. http://dc.engconfintl.org/phosphates_viii/36, 29 April – 4 May
  135. Maree J P (2018) Opportunities for SMMEs and technology developers, Innov8 Networking Event- Unchartered waters: opportunities for SMMEs within the water value chain. Innovation Hub, 6 Sep
  136. Maree J P and Mtombeni T (2018) Treatment of brine for the recovery of drinking water, calcium carbonate and sodium sulphate, Proceedings of the 2018 WISA biennial conference, 24 – 27 June, Cape Town, South Africa.
  137. Atta KP T, Maree J P, Onyango MS, Mpenyana-Monyatsi L (2018) Chemical phosphate removal from Hartbeespoort Dam water, Proceedings of the 2018 WISA biennial conference, 24 – 27 June, Cape Town, South Africa
  138. Maree J P, Mtombeni T, Ramothole P and Letjiane S L (2018) Treatment of copper leachate for the recovery of valuable products, 11 th ICARD/IMWA/AMD Conference – Risk to Opportunity, CSIR Conference Centre, Pretoria, South Africa.
  139. Muedi K, Brink H G, Masindi V, Maree J P (2018) Removal of As(V) from aqueous solution using Poly-cationic/Di-metal/nano-composite recovered and synthesized from authentic acid mine drainage treatment process, Fifth International Symposium on Green Chemistry, Sustainable Development and Circular Economy, Skiathos, Greece, September
  140. Muedi K L, Brink H G, Masindi V, Maree J P (2018) Recovery and Synthesis of Al 3+/Fe 3+ Polycationic-Nanocomposites from Acid Mine Drainage Treatment Process and their Respective Application in the Removal of Arsenic and Chromium Ions from Polluted Water Resources, 11th ICARD/IMWA Conference 2018 “Risk to Opportunity”, Pretoria, South Africa, September
  141. Letjiane S L, Maree J P, Onyango M S, Adeniyi A (2019) Pre-treatment of coal dump leachate with MgO for pigment recovery, IMWA 2019, Perm, Russia, 15- 19 July.
  142. Mogashane T M, Maree J P, Mujuru M, Letjiane S L (2020) Treatment of leachate with the ROC process for the recovery of drinking water and saleable products, 6th International Conference on Water Resource and Environment (WRE 2020), Tokyo University of Agriculture, Tokyo, Japan, August 23rd to 26th
  143. Ramothole, P M; Maree, J P; Onyango, M S: Adeniyi, A (2020) Performance Evaluation of Freeze Crystallization for removal of Water and Sodium Sulfate from Mine Wastewater, Proc. of the 18th International Conference on Science, Engineering, Technology and Waste Management (SETWM-20), Birchwood Hotel and OR Thabo Conference Centre, 17 November
  144. Mogashane, T M; Maree, J P; Nyamutswa, N; Vogel, J; Mujuru, M; Mphahlele-Makgwane, M M (2020) Evaluation of Forward Osmosis for treatment of sodium sulphate rich brine, 18th International Conference on Science, Engineering, Technology and Waste Management (SETWM-20), Birchwood Hotel and OR Thabo Conference Centre, 17 November,  https://doi.org/10.17758/eares10.eap1120243
  145. Ramothole P M, Maree J P, Onyango M S, Adeniyi A (2020) Performance Evaluation of Freeze Crystallization for removal of Water and Calcium Chloride from Galvanizing effluent, WITS and SAIMM Webinar: Mine Impacted Water: From Waste to Resource, 10 Nov.
  146. Letjiane S L, Maree J P, Onyango M S, Adeniyi A (2020) Treatment of iron-rich acid mine water for the recovery of drinking water, pigment and Na2SO4, WITS and SAIMM Webinar: Mine Impacted Water: From Waste to Resource, 10 Nov.
  147. Ntumba N, Maree J P, Mashigwana L, Mujuru M, Mpenyana-Monyatsi L (2020) Processing of gypsum sludge for the recovery of CaCO3 and sulphur via Ca(HS)2 formation, WISA 2020 Online Conference, 7 – 11 Dec.
  148. Letjiane S L, Maree J P, Onyango M S, Adeniyi A, Mpenyana-Monyatsi L (2020) Pre-treatment of coal dump leachate with MgO for pigment recovery, WISA 2020 Online Conference, 7 – 11 Dec.
  149. PM Ramothole P M, Maree J P, Onyango M S, Adeniyi A (2020) Energy utilization in Freeze Desalination, WISA 2020 Online Conference, 7 – 11 Dec.
  150. Mashigwana L, Maree J P, Onyango M S, Mujuru M, Adeniyi A (2020) Processing of Na2SO4 for the formation of Na2CO3 and sulphur, WISA 2020 Online Conference, 7 – 11 Dec.
  151. Mogashane T M, Maree J P, Mujuru M, Letjiane S L (2020) Treatment of leachate with the ROC process for the recovery of drinking water and saleable products, WISA 2020 Online Conference, 7 – 11 Dec.
  152. PM Ramothole, A Adeniyi, J P Maree, M S Onyango, 2021, Performance Evaluation of Freeze Crystallization for removal of Water and Sodium Sulphate  and Sodium Chloride from brine, SASEC, 17 to 19 November.
  153. L Mashigwana, J P Maree, L Monyatsi, A Adeniyi, M Onyango, 2022 Thermal processing of sodium sulphate to sodium carbonate, International Institute of Biological Chemical and Environmental Engineering (IICBEE), Birchwood Hotel & OR Tambo Conference Centre, Johannesburg, South Africa, Mar. 17-18
  154. A Tau, J P Maree, A Adeniyi, M Onyango (2022) Treatment of flue gas desulfurization waste water with freeze crystallization, WISA 2022 Conference, Sandton 28-30 Sep.
  155. Conny P Mokgohloa, Johannes P Maree, David S van Vuuren, Mabel Mphahlele-Makgwane, Malose Mokhonoana (2022) Recovery of CaCO3, Na2CO3 and MgO from alkali earth metals, WISA 2022 Conference, Sandton 28-30 Sep.
  156. J P Maree and TM Mogashane, Mabel Mphahlele-Makgwane, N Rein (2022) Zero waste and saleable products from mine waste, WISA 2022 Conference, Sandton 28-30 Sep.
  157. Tumelo Monty Mogashane, Johannes Philippus Maree, Munyaradzi Mujuru and Mamasegare Mabel Mphahlele-Makgwane (2022) Treatment of Acid Mine Drainage with ROC process for the recovery of drinking water and saleable products, WISA 2022 Conference, Sandton 28-30 Sep.
  158. Ramothole PM,  Adeniyi A, Maree J P, Onyango MS, (2022) Sodium sulphate recovery from industrial brine through cooling with Freeze desalination, SAIMM, Mine-impacted water Conference, 12-13 October.
  159. A L Tau, J P Maree, A Adeniyi, MS Onyango (2022) The 14th SANORD (Southern African-Nordic Centre) International Conference, The Ranch Hotel, Polokwane, Treatment of flue gas desulfurization waste water with freeze crystallization, 3-5 December
  160. C P Mokgohloa, J P Maree, M Mphahlele-Makgwane, M Mokhonoana (2022) The 14th SANORD (Southern African-Nordic Centre) International Conference, The Ranch Hotel, Polokwane, Recovery of CaCO3, Na2CO3 AND MgO from alkali earth metals, 3-5 December
  161. AL Tau, JP Maree, A Adeniyi and MS Onyango (2022) Treatment of Flue Gas Desulphurisation effluent with Freeze Crystallization, International Institute of Biological Chemical and Environmental Engineering (IICBEE), Johannesburg, South Africa, Nov. 28-29, ISBN: 978-989-9121-14-0, https://doi/10.17758/IICBE4.C1122223, p60-75.
  162. Conny P Mokgohloa, Johannes P Maree, M P Motaung, Malose P Mokhonoana (2022) Processing of Na2S to Na2CO3 and NaHS, International Institute of Biological Chemical and Environmental Engineering (IICBEE), Johannesburg, South Africa, Nov. 28-29, Editors: S.K. Ntwampe, E Fosso, B. Topcuoğlu, ISBN: 978-989-9121-14-0, 30-40.
  163. Mogashane, T M; Maree, J P; Mujuru, M; Mphahlele-Makgwane, M M; Modibane, K D (2023) Ferric hydroxide recovery from iron-rich acid mine water with calcium carbonate and a gypsum scale inhibitor, Minerals 2023, 13, 167, https://doi.org/10.3390/min13020167
  164. AL Tau, JP Maree, SL Letjiane, A Adeniyi and MS Onyango (2023) Pigment Recovered from Iron Rich Mine Water for use in Colored Concrete, 36th Int’l Conference on “Chemical, Biological, Environmental & Natural Resources” (CBENR-23) May 31-June 2, Kuala Lumpur (Malaysia), Editors: Prof. Dr. Bulent Topcuoglu Assoc. Prof. Dr. Hemantkumar P. Bulsara Prof. Dr. Kazuaki Maeda Prof. Dr. Md. Aminur Rahman ISBN – 978-989-9121-23-2 Published by Pilares D’Elegância, Lda, 25-29
  165. M.G. Rapeta, J. P. Maree, T.M Mogashane T.A.M. Msagati, Feasibility of pigment recovery from iron-rich acid mine water for the removal of natural organic matter, 8 th International Water Association Specialist Conference on Natural Organic Matter, Birchwood Hotel and OR Tambo Conference Centre, Boksburg, 3-6 Dec 2023.
  166. Maree, J P 2023 Reverse osmosis, an important stage to achieve zero waste, Akademischer Austauscher Austauschdienst German Academic Exchange service, Birchwood Hotel and OR Tambo Conference Centre, Boksburg, 3-8 Dec 2023.
  167. Rapeta, M G, Maree, J P, Nkambule T T I (2024) Treatment of coal leachate for neutralization and metal removal, IMWA 2024, Morgantown, West Virginia, 21 – 26 April.

Water Research Commission Reports

  1. Maree, J.P., 1994.  Neutralisation of acidic effluents with limestone, WRC Report No 355/1/94.
  2. Maree, J.P., 1996.  Underground neutralisation of mine water with limestone, WRC Report No 609/1/96.
  3.  J.P Maree, W F Strydom, C J L Adlem, M de Beer, G J van Tonder and B. J. van Dijck., 2002. Neutralisation of acid mine water and sludge disposal, In Press.
  4. J P Maree, S L Letjiane, R Ramothole, O A Oyewo, T M Mogashane, P S Sebothoma, S Vellem, N Ntumba, J Germanis, 2021, C2019/2020-00033: Treatment for the recovery of drinking water and valuable products from mine water, WRC Report

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