Browsing Doctoral Degrees (Chemical Engineering) by Title
Now showing items 27-46 of 92
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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 ... -
An investigation of advanced oxidation processes in water treatment.
(2001)The deteriorating water quality in South Africa and changing legislation requiring the industrial implementation of waste minimisation and pollution prevention technologies has highlighted the need for the investigation ... -
An investigation of the regeneration of carbonised catalyst pellets in a packed bed reactor.
(1973)No abstract available. -
Kinetic and mechanistic studies on the biological and chemical leaching of nickel from sulphide ores.
(1974)The aim of this investigation was to extend the knowledge of the bacterial leaching of copper and zinc sulphides into the area of nickel sulphide leaching. By far the major portion of both theoretical and practical expertise ... -
A kinetic study of the dissolution of natural and synthetic sphalerite in aqueous sulphuric acid and in acidic ferric suplhate media.
(1977)Four sphalerites (synthetic, high grade natural, moderately impure flotation concentrate and highly impure flotation concentrate) were leached in acid sulphate media without and with ferric ions present under the following ... -
The kinetics of steam gasification of South African coals.
(1990)The prime objective of a current research project at the University of Natal is to develop a novel autothermal fluidised bed coal gasifier which is capable of efficiently producing synthesis quality gas (rich in hydrogen ... -
Laser and ultrasound radiation pretreatment of cellulose in dissolving wood pulp.
(2017)Dissolving wood pulp (DWP) refers to wood extracted, chemically refined bleached pulp that comprises more than 90% pure cellulose. This type of pulp is mainly utilised for the production of various cellulose derivatives ...