Browsing by Advisor/Supervisor
Now showing items 1-20 of 23
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The characterisation of the corrosion and degradation of atomised ferrosilicon in a dense medium circuit
(North-West University, 2003)The Kumba Resources Sishen Iron Ore Mine is one of the biggest iron ore producers in South Afica, where beneficiation of the iron ore is done using a dense medium separation process. Ferrosilicon is used as the dense medium ... -
Degradation of polycyclic aromatic hydrocarbons from coal tar aqueous solutions using photo-biocatalysts
(North-West University (South Africa)., 2023)Polycyclic aromatic hydrocarbons (PAHs) are amongst the most predominant pollutants that are currently released into the environment. Despite the myriad of environmental regulations enforced by governments in countries ... -
The design and operational behaviour of a laboratory scale fixed-bed gasifier
(North-West University (South Africa) , Potchefstroom Campus, 2016)Fixed bed coal gasification and combustion operations form an important part in the global energy supply, and these processes are characterized by complex interactions which are difficult to study on an industrial scale. ... -
Design of a primary off-gas scrubber for a ferro-manganese electric arc furnace process
(2014)An electric arc furnace makes use of electrical energy in the form of an arc to heat charged material. In the ferromanganese smelting process the ferric oxide (Fe2O3) and manganese oxide (MnO2) are reduced with coke. The ... -
Determination and statistical evaluation of the effect of minerals and mineral associations in specific dense medium fractions on ash fusion temperature
(North-West University, 2005)During Sasol-Lurgi Fixed Bed Dry Bottom coal gasification, the mineral matter in coal undergoes various transformations. Heat induced transformation due to low ash fusion temperatures leads to agglomeration of the ash ... -
Effective removal of ammonia from the drinking water system : a case study at Magalies Water
(North-West University (South Africa)., 2023)Access to clean drinking water and sanitation is recognised as a human right and imperative to holistic functioning of life and interlocking nitty-gritties. In recent years, the quality of surface water in low- and ... -
Effluent treatment and its re-use for the Kriel Power Station
(North-West University (South Africa) , Potchefstroom Campus, 2015)Kriel Power Station generates effluent of about 5ml per day from different effluent streams of the pre-treatment plant. Currently the water is recovered into the effluent sump and pumped to the high level ash water sumps ... -
Environmental geochemistry and acid mine drainage modelling of the Sabie River water system in the vicinity of abandoned gold mines
(North-West University (South Africa)., 2023)The purpose of this research was to learn more about the release, transport, dispersal, and fate of metal species emitted by mine tailings storage facilities (MTSFs) on the Sabie River system. Analytical techniques and ... -
Fuel bed evaluations and coal properties transformation in a Sasol–Lurgi fixed bed dry bottom gasifier operating on North Dakota lignite
(North-West University, 2008)The growth in coal consumption worldwide as well as the high oil prices in the recent past has led to the current increased interest in the application of coal gasification technologies. The Sasoi-Lurgi Fixed Bed Dry Bottom ... -
Integrated barium carbonate process for sulphate removal from mine wastewater
(North-West University, 2009)The mining industry in South Africa is one of the primary sources of water pollution. Closed down mines leave a legacy of chemically polluted water after closure, and current operating mines are continuously discharging ... -
Investigation into the sustainable use of mine waste to treat or prevent acid mine drainage
(North-West University (South Africa)., 2023)Mine waste rock or tailings generate acid when sulphide minerals such as Pyrite (FeS2) oxidise in the presents of oxygen and water. The acid not neutralised by acid neutralising minerals such as calcite is leached into ... -
The leaching behaviour of a Ni–Cu–Co sulphide ore in an oxidative pressure–acid medium
(Potchefstroom University for Christian Higher Education, 2001)Hydrometallurgical processing of sulphide concentrates is an attractive method for the selective extraction of valuable metals. The dissolution of minerals in a leaching process involves several electrochemical parameters ... -
Leaching kinetics of carbonatite and silicate based chalcopyrite minerals
(North-West University (South Africa), 2020)Copper (Cu) is a widely used metal with high thermal and electrical conductivities, which is primarily extracted from the low-grade Cu sulphide mineral, chalcopyrite. Hydrothermal extraction is the preferred process for ... -
Limitations of current cooling water treatment processes to control cooling water chemistry in wet cooled power plants
(North-West University (South Africa), 2021)In a coal-fired power plant, recirculating cooling water exchanges latent heat energy with the exhaust steam in the condenser and transports the heat to the cooling tower for evaporative cooling. The water lost in the ... -
Limitations of current cooling water treatment processes to control cooling water chemistry in wet cooled power plants
(North-West University (South Africa)., 2021)In a coal-fired power plant, recirculating cooling water exchanges latent heat energy with the exhaust steam in the condenser and transports the heat to the cooling tower for evaporative cooling. The water lost in the ... -
Manipulation of gasification coal feed in order to increase the ash fusion temperature of the coal to operate the gasifiers at higher temperatures
(North-West University, 2006)Coal is a crucial feedstock for South Africa's unique synfuels and petrochemicals industry and used by Sasol as a feedstock to produce synthesis gas via the Sasol-Lurgi Fixed Bed Dry Bottom (FBDB) gasification process. The ... -
A new dissection methodology and investigation into coal property transformational behaviour impacting on a commercial-scale Sasol-Lurgi MK IV fixed-bed gasifier
(North-West University, 2006)Gasification behaviour is particle dependent, whilst gasifier (reactor) behaviour is an averaging process of individual responses of each particle [Glover, 1991]. It was hypothesized in the case of the present study that ... -
Remediation of AMD through bentonitic clay adsorption
(North-West University (South Africa) , Potchefstroom Campus, 2016)The discharge of acid mine drainage (AMD) from several abandoned mines in South-Africa has become a serious concern and environmental hazard. Since 2002 AMD has been decanting from the Number 8 shaft of the abandoned Harmony ... -
Species dispersion from a closed Namaqualand metalliferous mine into water sources, South Africa
(North-West University (South Africa), 2021)South Africa is faced with challenges related to potable water quality, which has periodically deteriorated, coupled with inconsistent supply of tap water to households. On the other hand, South Africa is an important ... -
Species dispersion from a closed Namaqualand metalliferous mine into water sources, South Africa
(North-West University (South Africa), 2021)