Browsing Faculty of Engineering by Author "10059571 - Waanders, Frans Boudewijn"
Now showing items 21-40 of 121
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Coal cleaning residues and fe-ultrafine particles and fe-minerals consequences
De Medeiros, Diego; Waanders, F.; De Leao, F.; De Sa, F.; Silva, L. (International Pittsburgh Coal Conference, 2016) -
Coal mining residues and sulphide oxidation by Fenton's reaction
Dalmora, A.C.; Waanders, F.B.; Silva, L.F.O. (Swanson School of Engineering, Univ of Pittsburgh, 2015) -
Coal particle and bed physical transformational behaviour after thermochemical conversion in a fixed bed
Conradie, Frederik H.; Bunt, John R.; Waanders, Frans B. (Elsevier, 2016)This paper examines the physical transformational behaviour that coal particles and the bed structure undergo in a fixed bed reactor. The transient overfeed configuration is used with feed gas entering from the bottom of ... -
Coal particle chemical transformational behaviour after thermochemical conversion in a fixed bed
Conradie, Frederik H.; Bunt, John R.; Waanders, Frans B. (Elsevier, 2016)This paper examines the chemical transformational behaviour that coal particles undergo during conversion in deep packed beds, typically found in industrial combustion and gasification operations. Experiments were performed ... -
Coal power plant wastewater treatment by thermal and membrane technologies
Redelinghuys, J.G.; Fosso-Kankeu, E.; Waanders, F.; Gericke, G. (Wiley, 2019)Abstract This chapter contains sections titled: Introduction -- Mineral Scale Formation -- Scale Formation Mechanisms -- Scale Inhibition Mechanisms -- Characteristics of Anti‐Scaling Agents -- Principles of ... -
Coal science de-sulfurization of some brazilian power-coals by low energy ultrasonication
Civeira, M.S.; Waanders, F.B.; Saikia, B.K.; Silva, L.F.O. (Swanson School of Engineering, Univ of Pittsburgh, 2015) -
Coal utilization in an uncertain economic world: a South African perspective
Waanders, F.B. (Swanson School of Engineering, Univ of Pittsburgh, 2015) -
Colouring of dolomite, quartzite and dolerite mine dump rocks
Easton, Z.; Waanders, F.B.; Fosso-Kankeu, E. (EARET, 2018)For environmental and aesthetic purposes it has become essential that mine dump rocks either blend into the environment or be used in the production of other products. Lately, there has been a constant need to produce ... -
Comparative analysis of brewing wastewater and lactate as carbon sources for microbial community treating acid mine drainage in anaerobic MBBR systems
Akinpelu, Enoch Akinbiyi; Ntwampe, Seteno K.O.; Fosso-Kankeu, Elvis; Waanders, Frans (Taylor & Francis, 2020)This study investigated the effect of carbon sources (n = 2) on the performance of a microbial community in an anaerobic moving-bed biofilm reactor (MBBR) treating acid mine drainage (AMD). The 1.5 L anaerobic MBBR was ... -
Conceptual use of vortex technologies for syngas purification and separation in UCG applications
Brand, J.F.; Van Dyk, J.C.; Waanders, F.B. (SAIMM, 2018)Syngas from Africary's Theunissen underground coal gasification (UCG) project will be used for power production and synthesis of liquid fuels and commodity chemicals. However, some of the coal components, especially ... -
Copolymerization of ethyl acrylate onto guar gum for the adsorption of Mg(II) and Ca(II) ions
Fosso-Kankeu, E.; Waanders, F.B.; Maloy, E. (Taylor & Francis, 2016)In the present study, the copolymerization of ethyl acrylate and guar gum was induced by microwave irradiation in the presence of catalytic amount of the initiator potassium persulfate (KPS). The maximum percentage conversion ... -
Corrosion testing of steel for production and injection well applications in a UCG process
Van Dyk, J.C.; Waanders, F.; Brand, J.; Van Wyk, A.C.; Kahts, C. (International Pittsburgh Coal Conference, 2016) -
Destabilization dynamics of clay and acid-free polymers of ferric and magnesium salts in AMD without pH adjustment
Ntwampe, I.O.; Waanders, F.B.; Bunt, J.R. (IWA Publishing, 2016)The physicochemical treatment was employed to treat acid mine drainage (AMD) in the removal of turbid materials using clay only (exp A) and a combination of clay, FeCl3 and Mg(OH)2 (exp B) to form a polymer. A 5 g sample ... -
Detailed characteristics of coal ash from the largest coal-fired power plant in South America
Dalmora, A.C.; Waanders, F.B.; Silva, L.F.O. (Swanson School of Engineering, Univ of Pittsburgh, 2015) -
Dispersion of inorganic contaminants in surface water in the vicinity of Potchefstroom
Manyatshe, A.; Fosso-Kankeu, E.; Van der Berg, D.; Lemmer, N.; Waanders, F. (Elsevier, 2017)Potchefstroom and the neighbouring cities rely mostly on the Mooi River and Vaal River for their water needs. These rivers flow through the gold mining areas and farms, and are therefore likely to be contaminated with ... -
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 ... -
Effect of temperature and cathode material on power production in an earthenware microbial fuel cell
Fosso-Kankeu, Elvis; Rosslee, Gerhard; Pandey, Sadanand; Waanders, Frans; Marx, Sanette (EARET, 2018)This study investigates the performance of microbial fuel cells (MFCs) fed with municipal sewage water considering parameters such as temperature and cathode materials. Single chamber ceramic MFCs with the cathode exposed ... -
Effect of temperature on the performance of Rheofloc: conductivity removal from RO-reject
Van der Linde, J.C.; Fosso-Kankeu, Elvis; Waanders, F.; Tamane, T.; Gericke, G. (EARET, 2018)South Africa is an arid country with an annual average rainfall less than half of the world’s average rainfall. The industrial sector uses 11% of this limited amount of water. Eskom is one of these users. Within the ... -
Electron beam and Mössbauer techniques combined to optimise base metal partitioning in the furnace
Andrews, Lesley; Pistorius, Chris P.; Waanders, Frans B. (Springer, 2008)Furnace slag and matte samples from Anglo Platinum smelters were analysed using a combination of electron microbeam and Mössbauer techniques. The object of the investigation was to establish the distribution of the base ... -
Environmental assessment and nano-mineralogical characterization of coal, overburden and sediment from Indian coal mining acid drainage
Dutta, Madhulika; Waanders, Frans B.; Saikia, Jyotilima; Taffarel, Silvio R.; De Medeiros, Diego (Elsevier, 2017)The deterioration of environmental conditions is the major contributory factor to poor health and quality of life that hinders sustainable development in any region. Coal mining is one of the major industries that contribute ...