Doctoral Degrees (Chemical Engineering)
Recent Submissions
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Carbon dioxide encapsulation in methane hydrates.
(2022)Coal mining and petroleum refining processes face extreme pressure under climate change and global warming threats. Hence alternative sustainable and renewable energy sources must be made available for the rising energy ... -
Removal of wastewater contaminants by adsorption using iron on carbon foam.
(2022)The dyes in textile effluents have a deleterious impact on water bodies and impede photosynthesis by decreasing sunlight penetration. This work examined the adsorption capacity of an iron oxide sorbent immobilised on carbon ... -
Characterization and analysis of keratinous material from waste chicken feathers as protein ingredient for animal feed.
(2022)Keratin is one of the most abundant proteins, which is derived from wool, feathers, nails, hair, and other sources. Chicken feathers are a well-known keratin waste by-product, produced in large quantities by poultry ... -
Decentralised sanitation to fill the gap in urban wastewater treatment within the eThekwini Municipality: a focus on tertiary treatment in vertical down-flow constructed wetlands.
(2022)South Africa’s bulk sanitation infrastructure is failing, and there is an urgent need to look at other appropriate sanitation solutions. Moreover, there is no data on the proportion of population with access to safely ... -
Phase equilibria studies on chemical mixtures encountered in the natural gas industry.
(2022)Natural gas processing involves removing impurities from the gas streams. These impurities include carbon dioxide, nitrogen, hydrogen sulphide, water vapour, mercury, and others. These impurities must be eliminated from ... -
A comprehensive investigation of existing sanitation helminth enumeration methods with the aim of producing an international standard.
(2022)TeHelminth testing in faecal sludge should be consistent so data are comparable. New faecal sludge treatments for on-site toilet technologies are constantly being developed in order for municipalities in developing ... -
Treatment and beneficiation of Kraft mill sludge to hydrogen and methane for bioenergy production.
(2021)The key drivers behind research into renewable and sustainable practices are escalating global energy demands and financial instability linked to the depletion of fossil fuel-derived energy resources. Additional drivers ... -
Gas-phase epoxidation of hexafluoropropene over supported copper oxide catalysts: mechanism and kinetics.
(2021)Abstract available in PDF. -
Bioethanol production from excess food crops in Nigeria: process design, optimization, and techno-economic analysis.
(2021)The global drive for diversification of energy sources, particularly by focusing less on non-renewable fossil fuels and harnessing renewable energy resources like bioethanol, has motivated this research work. Before the ... -
Evaluation of forward osmosis technology for the treatment of selected concentrated brines.
(2021)Abstract available in PDF. -
Cellulose nanocrystals: plant design for up-scaled production and applications in green construction materials.
(2021)Two main problems were addressed in this project. Firstly, upscaling technologies from the laboratory scale to industrial scale is difficult in the absence of pilot scale facilities. This research entailed the development ... -
Valorisation of waste chicken feathers: regeneration of keratin fibre into tubular nanofibres via electrospinning.
(2021)The poultry industry generates billions of kilograms of chicken feathers as a by-product during chicken meat processing. A large proportion of the produced feathers is disposed of by landfilling, burial or incineration, ... -
Beneficiation of kraft pulp millwaste: using green liquor dregs in treatment of acid mine drainage as a new disposal solution in South Africa.
(2020)Globally, water scarcity, depletion of non-renewable natural resources, handling and management of industrial wastes are not only significant environmental and economic burdens but also impact human and environmental health. ... -
Investigation and optimization of intensified separation processes: treatment of aqueous organic mixtures using reactive extraction and emulsion liquid membrane techniques.
(2020)The application of intensified processes of reactive extraction and emulsion liquid membrane technique for the separation of various low molecular weight carboxylic acids (propionic acid, malic acid and butyric acid) from ... -
Beneficiation of chicken feathers and sawdust waste biomass: extraction of keratin and cellulose nanocrystals for use as binders in particleboard production.
(2020)The wood industry consumes large quantities of synthesis adhesives accounting for more than 65% by volume of the adhesives used worldwide. Synthetic adhesives are formaldehyde-based and that cause environmental pollution ... -
Extraction of sulphur compounds from model fuels with use of ionic liquids.
(2020)One of the most promising applications of ionic liquids in the modern chemical industry is its use as extractants in separation methods, primarily extraction and extractive distillation. Sulphur emissions are regulated ... -
Development of a computationally efficient monolith reactor simulator: CFD-hybrid model analysis of methane oxidation monolith catalysed systems.
(2020)The optimisation of complex geometries such as that of monolith reactors can be supported by computation and simulation. However, complex boundaries such as those found in multi-channel monoliths render such simulations ... -
Purification of nitrogen trifluoride (nf3) via physical separation.
(2020)Abstract available in the PDF. -
Analysis of non-Newtonian behavior of crude oil: experimental study annumerical modeling using computational fluid dynamics (CFD) technique.
(2020)Abstract available in the PDF. -
Hydrate technology for the concentration of aqueous salt solutions using fluorinated refrigerants.
(2019)The world is facing a challenge with the scarcity of fresh water, due to an increase in the world population and the large expansion of industrial projects. This results in greater demand for fresh water. In such a scenario, ...
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