Motaung, S, Maree, J, Bologo, L, de Beer, M & Radebe, V 2008, 'Recovery of Reusable Water from Sulphate-Rich Industrial Effluents', in AB Fourie, M Tibbett, I Weiersbye & P Dye (eds), Mine Closure 2008: Proceedings of the Third International Seminar on Mine Closure
, Australian Centre for Geomechanics, Perth, pp. 565-574, https://doi.org/10.36487/ACG_repo/852_52
The removal of acid, metals and sulphate from mine water (gold mines) was assessed using the integrated
limestone/sulphide/lime/BaCO3 process. The laboratory scale integrated process was used for neutralization
and removal of the total dissolved solids content, from 7600 to 400 mg/l. Metals such as Ni, Co, Fe(II) and
Mn were removed effectively through precipitation with CaS or Ca(HS)2. The rate of sulphate removal
during gypsum crystallization was influenced by the gypsum seed crystal content. The rate of sulphate
removal during BaCO3 treatment was influenced by pH, CaCO3 solids and BaCO3 solid concentration.
Ca(HS)2 was produced from CaS bypassing CO2 through a CaS slurry. Further CO2 additions resulted in
H2S-stripping. This process is seen to be an effective way of solving an environmental problem associated
with acid mine drainage (AMD).
APHA Standard Methods for the Examination of Water and Wastewater, 17th Edit, American Public Health Assoc,
New York, USA, pp. 4-197.
Department of Water Affairs and Forestry (1996) Water quality guidelines. Volume 8, 49 p.
Geldenhuys, A.J., Maree, J.P., de Beer, M. and Hlabela, P. (2003) An integrated limestone/lime process for partial
sulphate removal. Journal of the South African Institute of Mining and Metallurgy, July/August, pp. 1-9.
Gryka, G.E. (1992) System for recovering sulfur from gases, especially natural gas, PIPco Inc., Report for Gas
Research Institute GRI-92/0436, Chicago, IL, USA. 17 p.
Hlabela, P., 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), pp. 14-22.
Kun, L.E. (1972) A report on the reduction of the sulphate content of acid mine drainage by precipitation with barium
carbonate. Internal report, Anglo American Research Laboratories, Project D/3/W/1.
Loewenthal, R.E. and Marais, G.V.R. (1976) Carbonate chemistry of aquatic systems: theory and application. Ann
Arbor Science Publishers, Inc., USA, pp. 122-129.
Loewenthal, R.E., Wiechers, H.N.S. and Marais, G.V.R. (1986) Softening and stabilization of municipal waters, water
research commission report, pp. 3.17-3.24.
Maree, J.P., Bosman, D.J. and Jenkins, G.R. (1989) Chemical removal of sulphate, calcium and heavy metals from
mining and power station effluents. Proceedings 1st Biennial Conf of the Water Inst of Southern Africa, Cape
Town, p. 23.
Maree, J.P. (1989) Treatment of water (BaS process), Republic of South Africa (Patent No. 90/1889), 28 November,
Canada (Patent No: 2,012,266,8) and United States of America (Patent No. 5,035,807).
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 Metal and Sulphate Concentrations. Mine Water and the Environment, 23(2),
Recovery of Reusable Water from Sulphate-Rich Industrial Effluents S. Motaung et al.
Maree, J.P., Hlabela, P., Nengovhela, N.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), pp. 195-203.
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), pp. 741-48.
Sillen, L.G. and Martell, A.E. (1964) Stability Constants of Metal Ligand Complexes, Sp. Publ. 17, The Chemical
Trusler, G.E., Edwards, R.I., Brouckaert, C.J. and Buckley, C.A. (1988) The chemical removal of sulphates.
Proceedings 5th National Meeting of the S.A. Institution of Chemical Engineers, Pretoria, W3-0-W3-11.
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), pp. 41-46.
Volman, R. (1984) The use of barium sulphide to remove sulphate from industrial effluents. M.Sc. Thesis (Chem. Eng),
University of Stellenbosch, 161 p.
Wilsenach, I.T. (1986) Cost estimate for barium sulphate reduction. Internal report, Division of Water Technology,
CSIR, Project 620/2616/6.