Advertisement

Minerals & Metallurgical Processing

, Volume 33, Issue 2, pp 77–81 | Cite as

Effect of pyrite concentration on the quality of ferric sulfate coagulants obtained by leaching from coal tailings

  • J. C. C. C. Menezes
  • A. V. Colling
  • R. A. S. Silva
  • I. A. H. Scheneider
Article

Abstract

Coagulants rich in ferric sulfate can be obtained from pyrite-containing coal tailings using a biohydrometallurgical process. The aim of this study is to evaluate the relationship between quantity of pyrite and rate of oxidation, with regard to the consequent production of ferric sulfate for potential use as a coagulant for water and wastewater treatment. Leaching experiments were carried out on the laboratory scale on four coal tailings with different concentrations of pyrite. Characterization of the coal tailings was conducted for the following parameters: total sulfur, pyritic sulfur, sulfate sulfur, organic sulfur, and elemental analysis of CHN (carbon, hydrogen, nitrogen). The samples were also subjected to X-ray diffraction analysis to assess their mineral compositions. The leaching experiments were accomplished using a laboratory column constructed as a packed bed reactor with a sprinkling system in a closed circuit. After four weeks of leaching, the liquor was filtered and evaporated to an iron concentration of about 12 percent w/w, which is typical of the ferric sulfate coagulants commercialized in Brazil.

Key words

Coal tailings Pyrite oxidation Acid mine drainage (AMD) Ferric sulfate Coagulants 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Association of California Water Agencies, 2000, “Review of the Proposed Public Health Goal for Aluminum in Drinking Water,” ACWA, Sacramento, CA.Google Scholar
  2. Becaria, A., Lahiri, D.K., Bondy, S.C., Chen, D., Hamadeh, A., Li, H., Taylor, R., and Campbell, A., 2006, “Aluminum and copper in drinking water enhance inflammatory or oxidative events specifically in the brain,” Journal of Neuroimmunology, Vol. 176, pp. 6–23, http://dx.doi.Org/10.1016/j.jneuroim.2006.03.025.CrossRefGoogle Scholar
  3. Bratby, J., 1980, Coagulation and Flocculation: With an Emphasis on Water and Wastewater Treatment, Upland Press, Croydon, UK, 354 pp.Google Scholar
  4. Brett, J.B., and Jillian, B., 2003, “Microbial communities in acid mine drainage,” Microbiology Ecology, Vol. 44, pp. 139–152, http://dx.doi.org/10.1016/s0168-6496(03)00028-x.CrossRefGoogle Scholar
  5. Buzin, P.J.W.K., Vigânico, E.M., Silva, R.A., Schneider, Ivo André H., and Menezes, J.C.S.S., 2014, “Production of ferrous sulfate from steelmaking mill scale,” International Journal of Scientific and Engineering Research, Vol. 5, pp. 353–360.Google Scholar
  6. Campbell, A., Hamai, D., and Bondy, S.C., 2001, “Differential toxicity of aluminum salts in human cell lines of neural origin: Implications for neurodegeneration,” Neurotoxicology, Vol. 22, pp. 63–71, http://dx.doi.org/10.1016/s0161-813x(00)00007-3.CrossRefGoogle Scholar
  7. Colling, A.V., 2010, “Oxidação da Pirita por Via Bacteriana em Rejeitos de Carvão,” M.Sc. Dissertation, Universidade Federal do Rio Grande do Sul.Google Scholar
  8. Colling, A.V., Menezes, J.C.S.S., and Schneider, I.A.H., 2011, “Bioprocessing of pyrite concentrate from coal tailings for the production of the coagulant ferric sulfate” Minerals Engineering, Vol. 24, pp. 1185–1187, http://dx.doi.org/10.1016/j.mineng.2011.04.003.CrossRefGoogle Scholar
  9. Eaton, A.D., Clesceri, L.S., Rice, E.W., and Greenberg, A.E., eds., 2005, Standard Methods for the Examination of Water and Wastewater, 21st Edition, American Public Health Association, Washington, D.C.Google Scholar
  10. Jiang, J.Q., Graham, N.J.D., and Harward, C., 1996, “Coagulation of upland coloured water with polyferric sulfate compared to conventional coagulants” Journal of Water Supply Research, Vol. 45, No. 3, pp. 143–154.Google Scholar
  11. Jiang, J.Q., and Graham, N.J.D. 1998, “Preparation and characterisation of an optimal polyferric sulfate (PFS) as a coagulant for water treatment,” Journal of Chemical Technology and Biotechnology, Vol. 73, pp. 351–358, http://dx.doi.org/10.1002/(sici)1097-4660(199812)73:4%3C351::aid-jctb964%3E3.0.co;2-s.CrossRefGoogle Scholar
  12. Johnson, D.B., and Hallberg, K.B., 2003, “The microbiology of acidic mine waters,” Research in Microbiology, Vol. 154, No. 7, pp. 466–473, http://dx.doi.org/10.1016/s0923-2508(03)00114-1.CrossRefGoogle Scholar
  13. Kontopoulos, A., 1998, “Acid mine drainage control” Effluent Treatment in the Mining Industry, S.H. Castro, F. Vergara, and M.A. Sánchez, eds., University of Concepción.Google Scholar
  14. Rondeau, V., Commenges, D., Jacqmin-Gadda, H., and Dartigues, J.F., 2000, “Relation between aluminum concentrations in drinking water and Alzheimer’s disease: An 8-year follow-up study,” American Journal of Epidemiology, Vol. 152, No. 1, pp. 59–66, http://dx.doi.org/10.1093/aje/kwn348.CrossRefGoogle Scholar
  15. Sánchez-España, F.J., López-Pamo, E., and Santofimia, E., 2007, “The oxidation of ferrous iron in acidic mine effluents from the Iberian Pyrite Belt (Odiel river watershed, Huelva): Field and laboratory rates” Journal of Geochemical Exploration, Vol. 92, pp. 120–132, http://dx.doi.org/10.1016/j.gexplo.2006.08.010.CrossRefGoogle Scholar
  16. Tchobanoglous, G., Burton, F.L., and Stensel, H.D., eds., 2003, Metcalf & Eddy, Wastewater Engineering: Treatment and Reuse, 4th Edition, McGraw-Hill Book Company, New York, NY.Google Scholar
  17. Walton, J.R., 2006, “Aluminum in hippocampal neurons from humans with Alzheimer’s Disease” NeuroToxicology, Vol. 27, pp. 385–394, http://dx.doi.org/10.1016/j.neuro.2005.11.007.CrossRefGoogle Scholar

Copyright information

© The Society for Mining, Metallurgy & Exploration 2016

Authors and Affiliations

  • J. C. C. C. Menezes
    • 1
  • A. V. Colling
    • 2
  • R. A. S. Silva
    • 3
  • I. A. H. Scheneider
    • 2
  1. 1.Laboratório de Estudos e Monitoramento Ambiental(LEMA), PPGCBUniversidade do Oeste de Santa Catarina(UNOESC)Videira-SCBrazil
  2. 2.Laboratório de Tecnologia Mineral e Ambiental (LTM), PPGE3MUniversidade Federal do Rio Grande do Sul (UFRGS)Porto Alegre-RSBrazil
  3. 3.Faculdade Meridional (IMED)Curso de Engenharia CívilPasso Fundo-RSBrazil

Personalised recommendations