Masters Degrees (Process Engineering)
Recent Submissions
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Value recovery from mine calcine tailings
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: As gold mining progresses, rich and free-milling ores which are metallurgically easy to process eventually get depleted. More metallurgically complex ores are encountered. These ores yield gold recoveries ... -
In situ extraction and recovery of volatile fatty acids from biogas-producing anaerobic digestion
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: An important set of compounds which are produced as intermediates in anaerobic digestion (AD) technologies, although they are not widely recovered as products in biogas plants, are volatile fatty acids ... -
Paper and pulp mill waste valorisation via the production of phosphate ceramic composites
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Paper and pulp mills in South Africa annually generate approximately 500 000 tonnes of wet paper and pulp sludge that is sent to landfill sites. Additionally, lignin is one of the most abundant biomaterials, ... -
Assessment of enzyme recycling schemes for paper sludge fermentation using kinetic modelling
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Ethanol for road transport is well established, but it also presents a “gateway molecule” in the bigger circular economy setting, where it is used for jet fuels, bioplastics, organic solvents, etc. These ... -
Technical and economic comparison of pyrolysis and pelleting for valorisation of pulper rejects from a secondary tissue mill, as alternative to disposal
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: South African paper mills are researching solutions to divert commercial and industrial waste (C&IW) from landfills. This problem is driven by increasing landfill fees, and pressure from the Department ... -
The pelleting of micro-fine agricultural lime to treat soil acidity, using sodium alginate, lignosulphonate, and bentonite as binders
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Limestone is often used to ameliorate soil acidity, as the release of carbonate ions neutralises acids in the soil. Agglomerated micro-fine limestone is an attractive alternative to powdered limestone ... -
Fault pattern recognition in simulated furnace data
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Modern submerged arc furnaces are plagued by blowbacks; hazardous occurrences where hot, toxic furnace freeboard gases are blown into the environment. While common occurrences, their causes are currently ... -
State-based decision support for condition shifting of multimodal continuous processes
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Automated distributed control systems are able to keep controlled variables at their set points and thus are able to maintain process operation within an operating mode (quasi-steady state). These automated ... -
An investigation into the effect of inline coagulation and air scouring to minimize ultrafiltration membrane fouling
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The quality of raw water is an essential factor that determines the treatment technologies and level of treatment required to attain specified treatment objectives. Water utilities such as Rand Water ... -
Numerical modeling of high-pressure phase-equilibria data using neural networks
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The design of process systems is greatly dependent on phase behaviour data, which can be predicted using equations of state(EOSs). These models, however, often fail to predict the behaviour near the mixture ... -
The measurement and modelling of vapour-liquid equilibria in ternary systems containing polar, cross-associating, and associating compounds
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The accurate production of simple binary vapour liquid equilibria (VLE) data sets is time consuming and expensive, and the measurement of similar data sets for multi component ... -
Development of an oleophobic woven fabric microfiltration membrane for decentralized sanitation applications
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Developing countries are faced with the major challenge of providing safe and adequate sanitation to their citizens. Decentralized sanitation systems have a great potential to address this challenge. The ... -
An initial investigation into the application of surfactin, a biosurfactant, as an alternative desulphurisation agent, for the prevention of acid mine drainage, via froth flotation
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Coal mining plays a significant part in the South African economy. One of the largest problems associated with coal mining is acid mine drainage (AMD), which is produced through the oxidation of ... -
Degradation of plastics in the marine environment with reference to temperature and environmental factors
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Plastic waste is an increasing problem, especially in the marine environment, where it has detrimental effects on the ecosystem . For a better comprehension of the environmental implications and eventual ... -
Investigating the physicochemical property changes of plastic packaging material exposed to UV radiation
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Global plastic production is increasing, and as a consequence more waste is generated and released into the environment. Oceanic weathering f actors such as ultraviolet (UV) radiation, temperature, and ... -
The development of biosorbents from agricultural waste sources for the separation of fat-based particles from water
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: The presence of hydrocarbons and triglycerides in water pose a technical challenge for wastewater processing or re-use. Hydrocarbon contamination reduces the water quality for available for human ... -
Improving the interpretability of causality maps for fault identification
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Worldwide competition forces modern mineral processing plants to operate at high productivity. This high productivity is achieved by implementing process monitoring to maintain the desired operating ... -
Life cycle assessment of process strategies for value recovery and environmental mitigation of mining waste
(Stellebosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: By 2031, South African primary ore gold grades are forecasted to decline to the gold grades expected in mine tailings resources. Furthermore, the reprocessing of mine tailings does not require the costly ... -
Evaluating the economics of metal recycling from end-of-life lithium ion batteries in South Africa
(Stellenbosch : Stellenbosch University, 2020-12)ENGLISH ABSTRACT: Lithium-ion batteries (LIBs) are used in various electronic equipment as well as electric vehicles. With the rapid growth and development in technology usage, it is not surprising that the ... -
Pyrolysis of contaminated PS single-layer and LDPE/PET multi-layer waste plastic packaging to optimise the production of oil for fuel applications
(Stellenbosch : Stellenbosch University., 2020-03)ENGLISH ABSTRACT: It has been predicted that by 2050 there will be more plastic in the ocean than fish by weight. Besides the obvious environmental threat, plastic waste also poses a loss of valuable hydrocarbon-based ...
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