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Browsing by Supervisor "Crouse, Philippus L."
Now showing items 1-20 of 33
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(University of Pretoria, 2019)Ion exchange and adsorption (can both be referred to as ‘sorption’) are widely used as purification and concentration methods in the nuclear industry. Various mathematic models have been developed to describe the mechanisms ...
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(University of Pretoria, 2017)Pelchem NF3 plant produces an ammonium acid fluoride waste stream. The material of construction for the piping and stirrer fabrication in the plant is Monel. As a predominantly nickel-copper alloy, with minute quantities ...
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(University of Pretoria, 2011)This dissertation details research aimed at designing a small batch distillation column to purify tetrafluoroethylene and hexafluoropropylene from a mixture containing tetrafluoroethylene, hexafluoropropylene and ...
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(University of Pretoria, 2012-06-26)Lithium is one of the most strategically important minerals at the time of writing. The demand for lithium and lithium compounds to be used in lithium-ion batteries is increasing day by day. Zimbabwe possesses a considerable ...
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(University of Pretoria, 2017)Generation IV high temperature nuclear reactors use TRISO (tristructural isotropic) particles for containment of radioactive fission products. In these particles silicon carbide (SiC) is the main barrier for containing ...
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(University of Pretoria, 2013-01-09)High-temperature reactors make use of tri-structural coated fuel particles as basic fuel components. These TRISO particles consist of fissionable uranium dioxide fuel kernels, about 0.5 mm in diameter, with each kernel ...
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(University of Pretoria, 2018)Alumina particles were successfully coated with silicon carbide (SiC) layers in a microwave plasma-assisted spouted bed reactor. Methyltrichlorosilane (MTS) was used as precursor for the SiC deposition reaction, and argon ...
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(University of Pretoria, 2016)At the University of Pretoria's Fluoropolymer Laboratory, an important long-term project is the development of a waste polytetrafluoroethylene (PTFE) depolymerisation process where TFE can be produced, purified and ...
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(University of Pretoria, 2019)Dynamic simulation programs were created in the Python programming language, to describe a laboratory scale, sub-zero distillation column, that is used to separate mixtures of tetrafluoroethylene (TFE), hexafluoropropylene ...
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(University of Pretoria, 2012)The principal aim of this research was to determine the optimum conditions of extraction and separation of niobium and tantalum with octanol as solvent, from Mozambican tantalite using ammonium bifluoride as an alternative ...
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(University of Pretoria, 2019)Zirconium (Zr) and hafnium (Hf) metals have drawn considerable attention due to their various applications, especially in the nuclear industry where zirconium is used as a cladding material for nuclear reactors due its low ...
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(University of Pretoria, 2016)Generation of power from fossil fuels produces large amounts of carbon dioxide which is a major contributor to global warming and many other environmental problems. Alternative sources of energy are available but fossil ...
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(University of Pretoria, 2014)This dissertation relates the results of the preliminary investigation into the catalytic interaction of PTFE with various inorganic materials, with the primary goal of find catalysts that will greatly increase the yield ...
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(University of Pretoria, 2020)Induktiefgekoppelde-plasmareaktore (IGP’s) het toepassings in verskeie industrieë, insluitend die voorbereiding van metaalpoeiers vir laagvervaardiging. Die skermgas (ook skutgas gnoem) speel ’n belangrike rol in die ...
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(University of Pretoria, 2013-01-09)South Africa is the second largest producer of zircon (ZrSiO4) in the world, Australia being the largest. Zircon is notorious for its chemical inertness. Extreme processing conditions such as alkaline fusion (NaOH at 600 ...
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(University of Pretoria, 2020-02-14)Extraction of Li2CO3 from Zimbabwean petalite, from the Bikita deposit, was studied using ammonium bifluoride (ABF) digestion at temperatures ranging from room temperature to 600 oC, and gram quantities of ore. ABF digestion ...
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(University of Pretoria, 2015)The favourable physical and mechanical properties of silicon carbide (SiC) nanopowders allow application across many areas, including high-power, high-frequency electronics and high-temperature technologies. Many different ...
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(University of Pretoria, 2019)Fluorinated polymers are niche macromolecules that play an essential role in modern life. The special properties of fluorine, including among others, a large electronegativity (ca 3.98), low polarisability, small van der ...
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(University of Pretoria, 2014)The processing of minerals containing tantalum and niobium is a challenge that has most modern researchers focused on optimising the processes that have already reached scientific maturity. Ore digestion in aqueous mixtures ...
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(University of Pretoria, 2020)Plasma gasification experiments were conducted on sucrose and crushed macadamia nutshells. The pilot-scale plasma gasification system used comprises a 15 kW DC plasma torch fitted to a 5 L gasification reactor. The DC ...
Now showing items 1-20 of 33