The Use of Calcium and Magnesium Hydroxides in Acid Mine Drainage Treatment
DOI:
https://doi.org/10.37134/ejsmt.vol6.1.2.2019Keywords:
acid mine drainage, calcium hydroxide, magnesium hydroxide, heavy metalsAbstract
Reagent grade of calcium and magnesium hydroxides were used in this study to treat acid mine drainage (AMD) sample. AMD sample was collected from a tin tailing pond that located in Pengkalan Hulu, Perak which as pH around 2.87 ± 0.01. pH values had increased after treated with calcium hydroxide (Ca(OH)2) and magnesium hydroxide (Mg(OH)2), respectively. The maximum pH values obtained was 11.35 ± 0.01 by using 1.0 g of Ca(OH)2 at interval time 5 min. For Mg(OH)2, the highest pH value can be obtained was 7.22 ± 0.01 by using 1.0 g at interval time 30 min. The concentration of heavy metals such as aluminum, copper, iron, manganese, nickel and zinc were reduced after reaction with both materials. For examples aluminum concentration was reduced from 110.33 mg/L to 2.80 mg/L and 0.01 mg/L by using 1.0 g of Ca(OH)2 and Mg(OH)2, respectively.
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References
J.A.H. Oates, Lime and Limestone; Chemistry and Technology, Production and Uses (Wiley-VCH, German, 1998).
H.R. Wenk and A. Bulakh, Minerals theirs Constitution and Origins (Cambridge University Press, UK, 2012) p.422.
G.S. Simate and S. Ndlovu, J. Environ. Chem. Eng. 2, 1785-1803 (2014).
D.B. Johnson, Water Air Soil Pollut.: Focus 3, 47–66 (2003).
A. Akcil and S. Koldas, J. Clean. Product. 14, 1139–1145 (2006)
V. Masindi, V. Akinwekomi, J.P. Maree and K.L. Muedi, J. Environ. Chem. Eng. 5, 3903–3913 (2017)
K. K. Kefeni, T. A.M. Msagati and B. B. Mamba, J. Clean. Product. 151, 475–493 (2017)
S. Heviánková, I. Bestova and M. Kyncl, Minerals Eng. 56,109–111 (2014)
P. Eger, G. Melchert, D. Antonson and J. Wagner, in An Ecological Approach to Mined Land Reclamation: Proceeedings America Society of Mining and Reclamation, Spokane, Washington, 16 May-19 May 1993, edited by B.A. Zamora and R.E. Connolly (American Society for Surface Mining and Reclamation, USA, 1993), pp. 204-217.
Environmental Quality Act 1974 (Act 127), Regulations, Rules & Orders. (International Law Book Services, Selangor, 2015) p.422.
