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Assessing The Acid Mine Drainage Potential Of A Stockpiled Gold Bearing Sulphide Ore

Author

Listed:
  • Bennetta Koomson

    (Kwame Nkrumah University of Science and Technology, Department of Materials Engineering)

  • Shadrack Fosu

    (University of Mines and Technology, Department of Environmental and Safety Engineering)

  • Blestmond Afrifa Brako

    (Kwame Nkrumah University of Science and Technology, Department of Materials Engineering)

  • Elias Kwasi Asiam

    (Kwame Nkrumah University of Science and Technology, Department of Materials Engineering)

  • Ernest K. Yanfu

    (Department of Civil and Environmental Engineering, Western University, London, Ontario, Canada)

Abstract

This work seeks to assess the acid mine drainage (AMD) potential of stockpiled sulphidic gold bearing ore that was left untreated for a period of four (4) years. The mineralogical composition of the stockpiled sulphidic gold ore was determined using X-Ray Diffractometry (XRD) and Reflected Light Microscope. The AMD potential and kinetic studies on the ore sample were determined using Acid Base Accounting (ABA) and Humidity Cell (ASTMD 5744). The XRD and microscope analyses showed that the gold ore contain arsenopyrite and pyrite as the major sulphide minerals. The ABA confirmed that the gold sulphide ore could be a potential source of AMD with respect to AMD marginal of safety if the ore is left untreated for a very long period. Humidity Cell kinetic analysis showed a possibility of mobilizing Arsenic (As) into the geoenvironment when there is a long period of oxidation of abandoned sulphide run-of-mine (ROM) ore.

Suggested Citation

  • Bennetta Koomson & Shadrack Fosu & Blestmond Afrifa Brako & Elias Kwasi Asiam & Ernest K. Yanfu, 2021. "Assessing The Acid Mine Drainage Potential Of A Stockpiled Gold Bearing Sulphide Ore," Earth Sciences Malaysia (ESMY), Zibeline International Publishing, vol. 5(1), pages 58-64, July.
    • Handle: RePEc:zib:zbesmy:v:5:y:2021:i:1:p:58-64
    DOI: 10.26480/esmy.01.2021.58.64
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