OpenUCT Home
→
Theses / Dissertations
→
Masters
→
Browsing Masters by Department

Browsing Masters by Department "Centre for Bioprocess Engineering Research"

Now showing items 1-20 of 103

Next Page

Ammonium hexachlororuthenate precipitation

Author: De Klerk, Frederick Jacobus Date: 2011 Ammonium hexachlororuthenate (ACR) is a salt precipitated during a substitution reaction between ammonium and ruthenate dissolved in a strong hydrochloric acid medium. This precipitation reaction is used within the platinum industry as a means ... Read more
An investigation into the enzymatic activity of deepsea actinobacteria in decolourising crystal violet dye

Author: Davids, Natasha Date: 2019 Crystal Violet (CV) decolourising deep-sea actinobacteria could provide a great source of novel redox biocatalysts that can be used in various applications such as removal of triphenylmethane dyes from contaminated wastewater and soil, ... Read more
Anaerobic digestion of algal biomass for bioenergy production- a feasibility study

Author: Inglesby, Alister Edward Date: 2011 AD technology is well developed, cost efficient and can be easily implemented in developing countries. Biogas production has become a very topical subject, with many European nations introducing initiatives to increase biogas production. AD ... Read more
The anodic dissolution of covellite in acidic, chloride solutions

Author: Basson, Petrus Date: 2010 An electrochemical study was conducted on a stationary, synthetically produced, covellite electrode in acidic, chloride solutions at ambient conditions to investigate the dissolution behaviour of the mineral over a surface potential range ... Read more
Application of electrical resistance tomography in evaluating the influence of nozzle design on the gas hold-up in boiling bubble column reactors

Author: Sudhakaran, Harikrishna Date: 2012 Bubble column reactors are extensively used in the petro-chemicals industry due to the combined advantages of high rates of heat and mass transfer coupled with low operating and maintenance costs. The complex hydrodynamics brought about by ... Read more
Application of mineralogy in the interpretation of laboratory scale acid rock drainage (ARD) prediction tests : a gold case study

Author: Dyantyi, Noluntu Date: 2014 The mining and beneficiation of gold generates large tonnages of waste, with up to 99% of mined gold ore discharged as waste. The waste generated contains unoxidized sulfides that when exposed to air and water react to form acid, which results ... Read more
An approach of compartmentalisation in development of non-isothermal chemical reactor network models for the high speed simulation of iso-octane combustion

Author: Khan, Zamier Ahmed Date: 2011 Every aspect of the modern day life relies on combustion, be it in motor vehicles, industrial equipment or power generation. The downside to the extensive use of combustion technology is the environmental pollution produced by the process. ... Read more
Assessment of water pollution arising from copper mining in Zambia: a case study of Munkulungwe stream in Ndola, Copperbelt province

Author: Mudenda, Lee Date: 2018 Water pollution is recognized as one of the major environmental problems in the mining industry. This has been compounded with an increase in agriculture activities. Water pollution is a major problem on copper and coal mines throughout the ... Read more
Atmospheric leaching of a saprolytic nickel laterite ore in chloride solutions

Author: Field, Karen Louise Date: 2008 Includes abstract. Read more
Base metal heap and tank leaching of a platreef flotation concentrate using ammoniacal solutions

Author: Muzawazi, Caroline Date: 2013 The technical feasibility of the ammonia leaching process of a Platreef flotation concentrate was investigated in different reactor settings i.e. shake flasks, columns and batch stirred tank reactors, respectively. The process investigated ... Read more
Biooxidation kinetics of Leptospirillum Ferriphilum attached to a defined solid substrate

Author: Duku, Porogo Date: 2011 Bioleaching can be categorized as being either stirred tank type (i.e. bio-oxidation) or irrigation type (i.e. heap/dump bioleaching) yet studies investigating the kinetics of bioleaching systems mostly use empirical data determined from ... Read more
Carbon dioxide mass transfer within algal raceway ponds and the potential for improvement using slopes to create wave

Author: Burke, Matthew Date: 2016 The growth of microalgae has the potential to be extremely useful for the production of a wide range of products or for specific processes, such as capture and cycling of CO₂. The fast micro-algal growth rates and ability to grow on agriculturally ... Read more
Characterisation of the effect of alteration on the PPM platinum ore and evaluation of selected strategies to improve metallurgical performance

Author: Ramonotsi, Mpho Date: 2011 The aim of this study is in two parts; the first part focuses on mineralogical quantification of the extent of weathering at PPM by profiling the flotation behaviour and host rock density with spatial depth. Read more
Characterising the acid mine drainage potential of fine coal wastes

Author: Kotelo, Lerato Olga Date: 2013 Acid mine drainage (AMD) is one of the major environmental challenges facing the South African mining sector. Acid mine drainage has received significant public attention in recent years. South Africa's long mining history has led to a growing ... Read more
Characterizing the potential environmental risks of South African coal processing wastes

Author: Moyo, Annah Date: 2018 The environmental impacts of coal processing wastes are a challenge in South Africa as large amounts of coal wastes are produced annually, pegged at 60 million tons per year according to Eberhard (2011). Whilst the fossil fuel-based industry ... Read more
Combining froth flotation and reflux classification to mitigate ARD generating potential of the Waterberg and Witbank coal ultrafines via sulfide removal

Author: Iroala, Onyinye Judith Date: 2014 In South Africa, over 10 million tons of ultrafine coal wastes are discarded every year, typically in the form of ultrafine slurries. These fines have a high calorific value, and contain sulfur minerals, particularly pyrite. The high calorific ... Read more
Control and optimization of a multiple-effect evaporator

Author: Smith, Patrick D Date: 2000 Falling commodity prices have reduced the profit margins of Southern African sugar producers. Although these price falls have been severe, they reflect a long-term trend of reducing margins for basic commodity producers during the 20th Century. ... Read more
Design of an optimised fed-batch process for insulin precursor production in Pichia pastoris

Author: Bhardwaj, Vinayak Date: 2011 The increasing prevalence of diabetes worldwide has greatly increased the demand for insulin, a key type of treatment for many diabetics. For this purpose, the methylotrophic yeast Pichia pastoris has emerged as an additional microbial host ... Read more
Desulphurisation flotation for the selective removal of pyrite from coal discards using microorganisms

Author: Msipa, Winfull Jaconia Date: 2018 Mineral beneficiation processes such as base metal and coal mining produce large amounts of waste rock and coal discards that contain significant quantities of sulphide minerals with Acid Rock Drainage (ARD) generating potential. ARD is caused ... Read more
Desulphurisation of fine coal waste tailings using algal lipids

Author: Chiodza, Kudzai Godknows Date: 2018 The South African economy is an energy-driven economy which relies on coal to meet most of its energy demands. Coal mining has resulted in the generation of coal waste over 60 million tonnes, annually. Apart from the huge footprint of this ... Read more

Now showing items 1-20 of 103

Next Page

Browse

All of OpenUCT
This Collection
- By Date
- Authors
- Titles
- Subjects
- Department
- Faculty