Browsing Faculty of Engineering by Author "Campbell, Quentin"

Now showing items 1-5 of 5

    • Adsorption of metal ions from fine coal tailings dump waste water using bio-char 

      Fosso-Kankeu, Elvis; Weideman, Reinhardt; Moyakhe, Dumisane; Campbell, Quentin; Waanders, Frans (EARET, 2018)
      Coal mining operations produce large amounts of tailings which contains heavy metals. Heavy metals such as cadmium (Cd) can cause environmental problems. The adsorption capacities of biochars produced from spent coffee ...

    • Coal product moisture control using stockpiles 

      Campbell, Quentin; Le Roux, Marco; Espag, Chané (Springer, 2016)
      The moisture content of product coal is a major factor influencing the efficiency of downstream coal utilization processes. Product stockpiles are often used as a control measure to regulate the moisture content of the ...

    • Column leaching of fine coal tailings: impact on environment and thickener operation 

      Moyakhe, Dumisane; Fosso-Kankeu, Elvis; Campbell, Quentin (EARET, 2018)
      The coal mining sector is synonymous with generating large quantities of waste. A comprehensive fraction of the waste is classified as fines (-500 µm) and ultrafine (-100 µm) particles, which accounts eleven per cent ...

    • Destoning of fine coal in a fluidized bed 

      Le Roux, Marco; Campbell, Quentin; Langner, Danie (Springer, 2016)
      Water scarcity is driving the development of dry coal beneficiation processes. A lot of research has gone into the development of dry dense medium fluidized bed technology (DMFB), especially in China. However, these processes ...

    • Effect of fine coal tailing porosity on the mobility and speciation of heavy metals in the leachates 

      Fosso-Kankeu, Elvis; Olivier, Charl; Moyakhe, Dumisane; Barlow, Brad; Campbell, Quentin; Waanders, Frans (EARET, 2018)
      The effect of porosity of coal tailings on the mobilization and speciation of heavy metals is important for the implementation of management strategies. In this study, column leaching experiments were carried out to ...