Abstract
Acid mine drainage (AMD), which has long been a significant environmental problem, results from the microbial oxidation of iron pyrite in the presence of water and air, affording an acidic solution that contains toxic metal ions. Electrochemical treatment of AMD offers possible advantages in terms of operating costs and the opportunity to recover metals, along with cathodic reduction of protons to elemental hydrogen. This work describes the electrolysis of synthetic AMD solutions containing iron, copper and nickel and mixtures of these metals using a flow-through cell divided with an ion exchange membrane. Iron was successfully removed from a synthetic AMD solution composed of FeSO4/H2SO4 via Fe(OH)3 precipitation outside the electrochemical cell by sparging the electrolysed catholyte with air. The work was extended to acidic solutions of Fe2+, Cu2+, and Ni2+, both singly and in combination, and to an authentic AMD sample containing principally iron and nickel.
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References
N.J. Bunce, M. Chartrand and P. Keech, Water Res. 35 (2001) 4410.
E.A. Ripley, R.E. Redman and A.A. Crowder, ‘Environmental Effects ofMining’ (St. Lucie Press, Delray Beach, FL, 1996), pp. 27 and 104.
Rescan Environmental Services Ltd, ‘Subaqueous Disposal of Reactive Mine Wastes: An Overview’, MEND Project 2.11.a. British Columbia Ministry ofEnergy, Mine and Petroleum Resources (1989).
J. Skousen, T. Hilton and B. Faulkner, Green Lands, Fall (1996), p. 36.
V.L. Snoeynk and D. Jenkins, ‘Water Chemistry’ (Wiley, New York, 1989), p. 264.
L. Oniciu and E. Grunwald (Glavanotehnica Scientific and Encyclopedic Publishers, Bucharest, Romania, 1980), p. 584.
S. Maki, N. Belzile and D. Goldsack, Proceedings of Sudbury '95-Mining and the Environment, Sudbury, ON, 28 May–1 June (1995), Vol. 1, p. 1.
Z.J. Georgopoulou, K. Fytas, H. Soto and B. Evangelou, Proceedings ofSudbury '95-Mining and the Environment, Sudbury, ON, 28 May–1 June (1995), Vol. 1, p. 7.
J-F. Ricard, M. Aubertin, J. McMullen, P. Pelletier and P. Poirier, Proceedings ofSudbury '99-Mining and the Environment, Sudbury, ON, Canada (1999), Vol. 1, p. 155.
W. Chesworth, B.J. Shelp and G.S. Shelp, ‘In situ treatment system for inhibiting the formation of, and for alleviating, acidity in water’, US Patent 5 630 934 (1997).
J.R. Hawley, ‘The Problem ofAcid Mine Drainage in Ontario’, Ministry of the Environment: Toronto, ON (1972), pp. 3, 27, 84, 217, 221, 235.
F.H. Pearson and A.J. McDonnell, ‘Use ofCrushed Limestone to Neutralize Acid Wastes’. Institute for Research on Land and Water Resources, Pennsylvania State University (1975).
Tyco Laboratories, Inc., ‘Electrochemical Treatment ofAcid Mine Waters’, Tyco Laboratories, Inc., Bear Hill, Waltham, Massachusetts, 02154. Environmental Protection Agency, Project 14010 FNQ (1972).
R.W. Treharne and D.E. Wright, ‘Acid mine water treatment process’, US Patent 3 823 081 (1974).
H-J. Friedrich and R. Knappnik, ‘Method for raising the pH of acid waters’, European Patent 0 814 060 A2 (1997).
A.M. Polcaro, S. Palmas, M. Mascia, F. Renoldi and R.L. Correa dos Santos, Ind. Eng. Chem. Res. 38 (1999) 1400.
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Chartrand, M., Bunce, N. Electrochemical remediation of acid mine drainage. Journal of Applied Electrochemistry 33, 259–264 (2003). https://doi.org/10.1023/A:1024139304342
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DOI: https://doi.org/10.1023/A:1024139304342