Browsing Doctoral Degrees (Chemical Engineering) by Title
Now showing items 8-27 of 94
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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 ... -
Carbon dioxide removal from coal power plants : a review of current capture techniques and an investigation of carbon dioxide absorption using hybrid solvents.
(2014)The aim of this project was to identify and assess all possible solutions to reduce carbon dioxide (CO2) emissions from coal power plants in South Africa, identify the most likely solution to be implemented industrially ... -
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 ... -
Changes in the chemical composition of sugar cane (Saccharum officinarum) during storage.
(1973)An outline is given of the South African sugar industry, with particular emphasis on the unit operations which make up the industrial process for manufacturing sugar from cane. Current knowledge of the chemistry of ... -
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 ... -
Design and operation of a multistage pressurized fluidized bed combuster.
(1981)A three-stage Pressurized Fluidized Bed Combustor (PFBC) of principal dimensions, O,4Sm internal diameter by4m high was designed and fabricated to burn South African coals, with particular reference to coals unsuitable ... -
Design of a static micro-cell for phase equilibrium measurements : measurements and modelling = Conception d'une micro-cellule pour mesures d'é́́́quilibres de phases : mesures et mod́élisation.
(2011)Vapour-Liquid Equilibrium (VLE), Liquid-Liquid Equilibrium (LLE) and Vapour-Liquid-Liquid Equilibrium (VLLE) are of special interest in chemical engineering as these types of data form the basis for the design and ... -
The determination of petroleum reservoir fluid properties : application of robust modeling approaches.
(2016)Abstract available in PDF file. -
Development and critical evaluation of group contribution methods for the estimation of critical properties, liquid vapour pressure and liquid viscosity of organic compounds.
(2006)Critical properties, liquid vapour pressures and liquid viscosities are important thermophysical properties required for the design, simulation and optimisation of chemical plants. Unfortunately, experimental data for these ... -
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 ... -
The development of a method for the inclusion of salinity effects into environmental life cycle assessments.
(2003)The work presented in this thesis stemmed out of the apparent lack of a method for incorporating salinity effects into environmental life cycle assessments. Salination of the water resources is a well-known problem in South ... -
Development of novel apparatus for vapour-liquid equilibrium measurements at moderate pressures.
(2006)In this work, a novel experimental apparatus has been designed, constructed and commissioned for the measurement of VLE at pressures up to 750 kPa and temperatures up to 600 K. The project undertaken represents a complete ... -
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 ...