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Browsing Conference Publications by Subject "Acid mine drainage"

Now showing items 1-18 of 18

Assessing alternative supporting organic materials for the enhancement of water reuse in subsurface constructed wetlands receiving acid mine drainage

Author: Oberholzer, MM ; Oberholster, PJ ; Ndlela, Luyanda L ; Botha-Oberholtster, AM ; Truter, CJ Date: Jun 2022 Acid mine drainage (AMD) is a global problem with severe consequences for the environment. South Africa’s abandoned mines are a legacy from the country’s economic dependence on the mining sector, with consequent negative impacts on ecosystems. ... Read more
Biological mine water treatment operating a one stage reactor system

Author: Baloyi, MJ ; Greben, HA Date: May 2006 Mine drainage arises from oxidation of pyrites, due to exposure to air and water. Acid mine drainage normally contains high concentrations of sulphate, metals and acidity. These pollutants can be reduced by applying the biological sulphate ... Read more
A comparison of machine learning techniques for predicting downstream acid mine drainage

Author: van Zyl, TL Date: Jul 2014 We consider the challenge of providing downstream predictions of water quality using a time-series of upstream insitu measurements and a time-series of remote sensed precipitation data from the Tropical Rainfall Measuring Mission (TRMM). We ... Read more
Focus on CSIR research in pollution and waste: Biological sulphate removal technology

Author: Godfrey, Linda K Date: Aug 2007 Acid mine drainage (AMD) is formed when the mineral pyrite comes into contact with oxygen and water, producing elevated sulphate, metal and acidity concentrations. Biological sulphate removal technology can be used to treat AMD, using cost ... Read more
Focus on CSIR research in pollution and waste: High sulphide Concentrations tolerated by sulphate reducing bacteria

Author: Greben, H Date: Aug 2007 Acid mine drainage (AMD) is a common result of mining activities caused by bacterial oxidation of sulphide minerals (pyrite) that results in sulphate rich waste water. AMD can be treated biologically in the presence of sulphate reducing ... Read more
Fractional and sequential recovery of inorganic contaminants from acid mine drainage using cryptocrystalline magnesite

Author: Masindi, Vhahangwele ; Ndiritu, JG Date: Jun 2017 This study evaluated the fractional and sequential recovery of inorganic contaminants from acid mine drainage (AMD) using cryptocrystalline magnesite. Batch experimental approach was used to fulfil the goals of this study. The obtained results ... Read more
Geophysical delineation of AMD in the Cradle of Humankind

Author: Van Schoor, Michael ; Hobbs, Philip Date: Aug 2016 Acid mine drainage (AMD) and its effect on surface and groundwater resources in the Cradle of Humankind (COH) area near Krugersdorp is a pertinent and well-documented concern. In 2008, a water resources monitoring programme for the area was ... Read more
Linking ecotoxigenomic tools with ecological data to support river restoration

Author: Jappie, S ; Botha, A-M ; Oberholster, Paul J Date: Oct 2012 In this study, specific pollutants and their particular sub-cellular effect on organisms were identified through the use of ecotoxigenomic tools. Read more
Minerals recovery from CSIR acid mine drainage treatment plant and their possible uses

Author: Baloyi, Siwela J Date: Oct 2022 The purpose of this work was to explore the mechanisms and efficacy of the selective recovery of high-concentration goethite, hematite, magnetite, gypsum, and limestone from raw AMD using magnesite, soda ash and lime at a pilot-scale process, ... Read more
Neutralization and attenuation of metal species in acid mine drainage and mine leachates using magnesite: a batch experimental approach

Author: Masindi, Vhahangwele ; Gitari, WM ; Tutu, H ; De Beer, Morris ; Nekhwevha, N Date: Aug 2014 This paper evaluates the potential application of amorphous magnesite for remediation of Acid Mine Drainage (AMD). Magnesite was mixed with simulated AMD at specific S/L ratios and agitated in an orbital shaker and its capacity to remove ... Read more
Passive remediation of acid mine drainage using cryptocrystalline magnesite: a batch experimental and geochemical modelling approach

Author: Masindi, Vhahangwele ; Gitari, MW ; Tutu, H ; De Beer, Morris Date: Oct 2015 Acid mine drainage is generated when mining activities expose sulphidic rock to water and oxygen leading to generation of sulphuric acid effluents rich in Fe, Al, SO (Sup4) and Mn with minor concentrations of Zn, Cu, Mg, Ca, Pb depending on ... Read more
The potential of acidophilic macroalgae as part of passive bioremediation technology for acid mine drainage in constructed wetlands

Author: Cheng, Po-Hsun ; Oberholster, Paul J ; Botha, A-M Date: Oct 2012 The properties of acid mine drainage (AMD) render water resources less habitable to various biota, hence waters that receive AMD are often characterised by very low biodiversity and the flora and fauna become dominated by highly tolerant ... Read more
Recovery of drinking water and by-products from gold mine effluents via alkali-bariumcalcium processing

Author: Wilsenach, J ; De Beer, Morris ; Motaung, S ; Bologo, L ; Redebe, V ; Moalusi, M ; Maree, J Date: Nov 2008 Acid mine drainage results from active as well as decommissioned mines in the gold mining and coal mining fields. This water is highly acidic, containing sulphate, iron, aluminium, heavy metals and some radioactivity. When discharged into the ... Read more
Recovery of water from acid mine drainage

Author: Mulopo, J ; Motaung, SR ; Mashego, M ; Moalusi, M Date: Oct 2010 The reaction rate of sulphate removal from acid mine drainage using barium carbonate was studied for various pH, calcium concentration, and BaCO3/SO42 feed ratios in batch studies. Process synthesis concepts were used to investigate the ... Read more
A review of technologies used in handling the acid mine drainage challenge: Perspectives on using green liquor dregs as a sustainable option for treatment of acid mine drainage

Author: Sebogodi, Keolebogile R ; Johakimu, Jonas K ; Sithole, Bishop B Date: Feb 2021 Acid mine drainage (AMD) is one of the repercussions that result from earth-moving activities around the sulfide-bearing mineral hosts. The detrimental effects associated with this AMD are driven by its characteristics, which include low pH ... Read more
Synthesis of porous magnesite-bentonite clay composite and its application for neutralisation and attenuation of inorganic contaminants in acidic and metalliferous mine drainage

Author: Masindi, Vhahangwele ; Mugera, GW ; Hlanganani, T ; De Beer, Morris Date: Aug 2015 This paper evaluated the application of cryptocrystalline magnesite-bentonite clay composite for treatment of acid mine drainage (AMD). Bench laboratory studies were used to evaluate the treatment of AMD. Read more
Techno-economic analysis of the reclamation of drinking water and valuable minerals from acid mine drainage

Author: Shingwenyana, Rhulani K ; Shabalala, AN ; Mbhele, Nkhangweleni R ; Masindi, Vhahangwele Date: Nov 2021 The concept of circular economy in wastewater treatment has recently attracted immense interest and this is primarily fueled by the ever-growing interest to minimise ecological footprints of mining activities and metallurgical processes. In ... Read more
Volatile fatty acid formation and utilization in anaerobic sulphidogenic batch reactors

Author: Greben, HA ; Baloyi, LJ ; Eisberg, R ; Joubert, LM ; Botha, A ; Venter, SN Date: May 2006 Acid Mine Drainage (AMD) needs to be treated, before it is recharged in rivers and dams. The biological treatment of AMD can be applied using degradation products of cellulose, for example Volatile Fatty Acids as carbon sources. The aim of ... Read more

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