Browsing Doctoral Degrees (Chemical Engineering) by Title
Now showing items 23-42 of 95
-
Dispersion in slowly moving fluids.
(1970)This work is concerned with the characterization of slowly moving fluids and was carried out on the flow of water through a narrow sedimentation tank. Dispersion in the type of flow structure involved is caused mainly by ... -
Dynamic modelling and optimal control of sugar crystallisation in a multi-compartment continuous vacuum pan.
(2002)The objective of this work was to determine the operating conditions which would maximise the crystallisation performance of continuous vacuum pans used in the sugar industry. The specific application investigated in detail ... -
The effect of solid micro particles on mass transfer in agitated dispersions.
(2008)The industrial application of gas-liquid contactors has made effective design and optimisation of these processes a very important topic. In order to sustain a competitive advantage, rate limiting steps must be clearly ... -
An environmental life cycle assessment of the provision of recycled water in Durban.
(2006)This dissertation investigated the questions of sustainable development, in the context of water and sanitation provision, for the eThekwini Municipality. The Durban Water Recycling (DWR) plant, run by Veolia Water, was ... -
Evaluation of forward osmosis technology for the treatment of selected concentrated brines.
(2021)Abstract available in PDF. -
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 ... -
Formulation and application of a dynamic model for atmospheric point sources.
(1977)No abstract available. -
Gas residence time testing and model fitting : a study of gas-solids contacting in fluidised beds.
(1984)This work is concerned with the effect of vessel geometry on the hydrodynamics of fluidisation of a bed of milled iron oxide. The effect of going from a cold model representative of a typical pilot plant reactor to one ... -
Gas-phase epoxidation of hexafluoropropene over supported copper oxide catalysts: mechanism and kinetics.
(2021)Abstract available in PDF. -
Gas-phase epoxidation of hexafluoropropylene.
(2012)A process was developed for the production of hexafluoropropylene oxide via the gas-phase oxidation of hexafluoropropylene with molecular oxygen. The non-catalytic oxidation reaction was investigated in an isothermal, ... -
High pressure phase equilibrium studies.
(2018-09-17)This project involved the design, construction and commissioning of a new isothermal multipmpose high-pressure vapour-liquid equilibrium (HPVLE) apparatus of the static type. The equilibrium cell was approximately 200 ... -
A high resolution model for multiple source dispersion of air pollutants under complex atmospheric structure.
(1986)No abstract available. -
Hydrate phase equilibrium studies for Xe, Ar, Kr, and CF4 in the presence of TBAB aqueous solutions.
(2015)Abstract available in PDF file. -
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, ... -
An integrated computational fluid dynamics an kinetics study of ozonation in water treatment.
(2005)Computational fluid dynamic (CFO) modelling has been applied to examine the operation of the prc-ozonation system at Wiggins Waterworks, operated by Umgeni Water in Durban, South Africa. Ozonation is employed in water ... -
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 ... -
An investigation into the effects of UG2 Ore variability on froth flotation.
(2013)South Africa is the world’s largest producer of platinum group elements (PGEs). Mining takes place in the Bushveld Complex, and recent statistics, (Mudd, 2010), showed that the UG2 reef is the main source of production, ... -
An investigation into the Fischer-Tropsch synthesis over supported ruthenium in a stirred gas-solid reactor.
(1979)A stirred gas-solid reactor has been used to study the Fischer-Tropsch synthesis over a supported ruthenium catalyst. Detailed catalyst characterisations were conducted on both fresh and used catalyst samples and included ... -
An investigation of a supersonic chemical reactor.
(1977)The development of a supersonic chemical reactor is examined. The central concept of such a reactor is that gases can be expanded to supersonic speed which will result in a decrease in their static temperature to the ...