Browsing Masters Degrees (Chemical Engineering) by Title
Now showing items 21-40 of 196
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Carbon flow analysis of the South African paper converting, paper recycling and end user stage of paper.
(2017)Abstract available in pdf. -
Catalytic hydrocracking of waste vegetable oil transition metal-based catalysts : selective production of jet fuel range alkanes.
(2015)The performance of transition metal-based catalysts on amorphous supports has been investigated for the high pressure (120 bar) hydrocracking of waste vegetable (cooking) oil in a fixed-bed tubular reactor between 400-450 ... -
CFD modelling of a novel clarifier design for use in sugar cane juice clarification.
(2008)The purpose of clarification in the sugar industry is to remove soluble, insoluble and colloidal matter from cane juice. Efficient clarification is required to produce high quality sugar and to prevent entrainment of solids ... -
Characterization of fluidization regimes by analysis of pressure fluctuations in gas-solid fluidized beds.
(2017)Fluidized beds are ranked as the top contacting method with the best overall benefits, and have been used over many years in several industrial applications. Literature indicates that pressure fluctuations are influenced ... -
Commissioning of a refrigerant test unit and assessing the performance of refrigerant blends.
(2017)This study has two major purposes; to commission and to demonstrate that a new refrigerant test rig can be used for investigating the performance of different refrigerants and refrigerant blends. The motivation for this ... -
Comparative refining characteristics of northern and southern hemisphere bleached softwood Kraft species.
(2009)An experiment was designed to test the hypothesis that each softwood pulp is unique and requires a specific, well defined mechanical treatment to derive its maximum strength potential. Three bleached softwood Kraft pulps ... -
A comparative study between the neutralizing capabilities of fly ash and green liquor dregs with acid mine drainage.
(2018)In South Africa, acid mine drainage (AMD) is a huge problem and arises when sulphide-bearing materials become exposed to oxygen and water. AMD formation is catalysed by mining and mineral extraction activities. The AMD ... -
A comparative study of contacting equipment for the recovery of copper from cupric sulphate solution.
(2005)Ion exchange for the recovery of metals from solutions is a well established process. It features significantly in terms of being able to recover valuable substances from what would otherwise be waste streams as well as ... -
A comparison between column and mechanical cell performance in platinum flotation.
(2012)Froth flotation has been used to concentrate minerals for over a century (Finch and Dobby, 1990) and it is essential for the economical recovery of metals which are present at low concentrations. The traditional flotation ... -
Comparison of an anaerobic baffled reactor and a completely mixed reactor : start-up and organic loading tests.
(2000)The aim of the investigation was to compare the performance of an anaerobic baffled reactor (ABR) with a completely mixed anaerobic reactor (CMAR). The ABR was operated with a hydraulic retention time (HRT) of 20 h ... -
The compostability and direct land application of paper mill sludge.
(2014)Mpact Ltd strives for the environmentally friendly disposal of waste material generated by 3 mills, Mill A, B and C. Mill C makes use of unbleached bagasse pulp to produce fluting and corrugated packaging paper, producing ... -
Delays and disruptions on construction projects within the public sector integrated project delivery system as an alternative.
(2017)The South African construction industry has earned a reputation for poor project delivery, particularly within the public sector. Successful project delivery has been identified as attaining the project objectives with ... -
The design of two apparati to measure solid-liquid and liquid-liquid equilibria data.
(2010)Two new apparati have been developed to measure solid-liquid and liquid-liquid equilibria via a synthetic visual method by determination of thermal signatures. One apparatus adopts a technique of using Peltier modules for ... -
Determination of activity coefficients at infinite dilution using the inert gas stripping technique.
(2008)The determination of limiting activity coefficients in liquid mixtures has become an important tool in chemical engineering. It has been investigated intensively during the past in order to find new alternatives and ... -
Determination of phase equilibria for long-chain linear hydrocarbons by Monte Carlo simulation.
(2005)The focus of this study was to determine the coexistence phase equilibria for three groups of long-chain linear hydrocarbons (n-alkanes, 1-alkenes and 1-alcohols) using Monte Carlo simulation. Three common transferable ... -
Development amd implementation of a real-time observer model for mineral processing circuits.
(2004)Mineral processing plan ts, such as LONMIN's Eastern Platinum B-stream, typically have few on-line measurements, and key measures of performance such as grade only become available after samples have been analysed in the ... -
The development and application of combined water and materials pinch analysis to a chlor-alkali plant.
(1989)Pinch Analysis, in the broadest sense, is concerned with the optimal use of resources (material or energy) in a multi-process system. Pinch Analysis based techniques have emerged for water systems over the past decade. A ... -
Development and modelling of a semi-batch flotation apparatus.
(2008)When designing or optimizing flotation circuits in mineral processing plants, it is necessary to have accurate values of the flotation kinetics to ensure the correct mass pulls and material balances on the plant. Previous ... -
Development and verification of an Aspen Plus® model of a sugarcane biorefinery.
(2018)This dissertation describes a steady-state mass and energy balance model of a raw sugar mill which has been developed using the Aspen Plus® software. The Aspen Plus® model was designed to replicate an existing MATLAB model ... -
Development of a continuous process for the production of hexafluoropropyl methyl ether.
(2015)Partially fluorinated dialkyl ethers are valuable intermediates for organofluorine syntheses. These compounds can be used for the preparation of perfluoroacrylic acids or the anhydrides, amides and esters thereof. They ...