Bench-scale study of acid mine drainage treatment using local neutralisation agents
Keywords:Neutralisation Agent, Limestone, Hydrated Lime, Serpentinite, Concrete Waste, Acid Mine Drainage
Bench-scale experiments were conducted to evaluate the treatment performance of alternative alkaline media; serpentinite and concrete waste compared to conventional treatment with common neutralisation agents namely hydrated lime and limestone in terms of reducing acidity and metals concentrations in acid mine drainage (AMD) samples taken from effluent of an abandoned copper mine located in Mamut, Sabah. Parameters tested in these experiments include particle size and mass of the materials. The tests were performed using a jar tester with the particle size varies at 45 µm, 75 µm and 150 µm and the mass was put to 1-10 grams with incremental dosing of 0.5 grams for every 20 minutes. Results of the study showed that hydrated lime, limestone and concrete waste with different sizes and mass were capable in achieving pH targets required for neutralisation of the AMD. Overall, metal concentrations of Fe, Al and Cu followed a certain reduction trends whilst Mn has shown a poor reduction.
D. Mohan and S. Chander, J. Hazardous Materials, B137 (2006), 1545.
C.A Rios, C.D. Williams, and C.L. Roberts, J. Hazardous Materials, 156 (2008) 23.
Myroslav, Sprynskyy, Boguslaw, Buszewski, Artur, P. Terzyk, Jacek and Namiesnik, J. Colloid Interface Sci., 304 (2006) 21.
R. P. Lopez, J. Castillo, D. Quispe, and J. M. Nieto, 2010, J. Hazardous Materials, 177 (2010) 762.
L.R. Bernier, Env. Geology, 47(5) (2005) 670-684.
C.J. Lewis and R.S. Boynton, Acid Neutralisation with Lime for Environmental Control and Manufacturing Processes, Bulletin no.216, Natural Lime Association, Virginia, 1995, 8.
B. Sun, Q. Zhou, X. Chen, T. Xu, and S. Hui, J. Hazardous Materials, 179 (2010) 400.
K. Saibeh, M.H. Abdullah, B. Musta, K.Bisin and E. Saleh, Geological Mapping, Geochemical, Groundwater Quality and Limnology Studies of Ex-Copper Mine Mamut, Ranau, Sabah, Consultancy Report, UMS-Link Holdings Sdn. Bhd., Kota Kinabalu, Sabah, (2010).
M. Descostes, P. Vitorge, and C. Beaucaire, Geochimica et Cosmochimica Acta, 68(22) (2004) 4559.
M. Balintova and A. Petrilakova, Chem. Eng. Transactions, 25 (2011) 345.
A. M. Silva, E.C. Cunha, F.D.R. Silva, V.A. Leao, J. Cleaner Production, 29-30 (2012) 11.
N.R. Hendricks, The application of high capasity ion exchange adsorbent material, synthesised from fly ash and acid mine drainage, for the removal of heavy metals from secondary co-disposed process waters. Master’s thesis, University of Western Cape, South Africa, (2005).
P. M. Armenante, Precipitation of Heavy Metals from Wastewaters, Slide Presentation, NJIT, (1997).