Browsing Doctoral Degrees (Chemical Engineering) by Title
Now showing items 35-54 of 92
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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 ... -
Measurement and thermodynamic interpretation of high pressure vapour-liquid equilibrium data.
(1990).. Detailed experimental and thermodynamic studies of. the isothermal phase equilibria for the -
Membrane distillation of concentrated brines.
(2010-10-29)Salinity is one of the most critical environmental problems for water scarce countries, -
Modelling of a vibrating-plate extraction column.
(2010)Liquid extraction, sometimes called solvent extraction, is the separation of the constituents of a liquid solution by contact with another insoluble liquid. It belongs to the class of countercurrent diffusional separation ... -
Modelling of turbulent cross-flow microfiltration of particulate suspensions.
(1991)No abstract available. -
Molecular targeting of refrigerant mixtures.
(2014)Refrigeration units, besides common household refrigerators and air conditioning systems, are necessary components for the successful operation of many industrial processes in the chemical, petrochemical, pharmaceutical ... -
Municipal wastewater characterization : application of denitrification batch tests.
(1999)The biological treatment of wastewater has evolved significantly from simple single sludge systems practicing organic carbon removal to ones which now include either nitrification/denitrification (N/DN) and / or phosphorus ...