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Browsing Chemical Engineering by Supervisor "Chirwa, Evans M.N."
Now showing items 1-20 of 35
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(University of Pretoria, 2010-09-20)In recent years there has been pressure exerted on the feed industry in Southern Africa to produce enough animal feed to meet the region’s nutritional requirements. The increase in the cost of animal feed eventually affects ...
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(University of Pretoria, 2013-01-09)A strategy for beneficiation of wastewater streams from fissure and process water developed for a gold mine operation in the west of Johannesburg was tested for viability in a pilot study. The investigation was aimed at ...
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(University of Pretoria, 2017)Coal gasification stripped gas liquor (CGSGL) wastewater contains large quantities of complex organic and inorganic pollutants which include phenols, ammonia, hydantoins, furans, indoles, pyridines, phthalates and other ...
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(University of Pretoria, 2018)Environmental sustainability has become a leading discussion in the world, coupled with a quest to minimise severe environmental pollution. The chrome mining and ferrochrome processing industrial revolution has contributed ...
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(University of Pretoria, 2015)Tailing dumps and process waste stockpiles at uranium mining sites and nuclear power processing facilities contain significant levels of uranium. Uranium in the tailing dumps can exist either as U(VI) or U(IV) depending ...
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(University of Pretoria, 2011-10-14)The performance of a growing sulphate reducing bacteria consortium for Sr2+, Co2+ and Cs+ removal from solution in a batch sulphidogenic bioreactor was investigated. Metal removal by the growing bacterial consortium, and ...
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(University of Pretoria, 2016)Petroleum hydrocarbons are organic pollutants of major concern due to their wide distribution, persistence, complex composition, and toxicity. They can bioaccumulate in food chains where they disrupt biochemical or ...
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(University of Pretoria, 2017)Polycyclic aromatic hydrocarbons (PAHs) do not dissolve easily in water, due to their hydrophobic properties. PAHs are unavailable to most aromatic compound degrading organisms, due to these properties. In this study, a ...
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(University of Pretoria, 2019)Soil pollution in recent years has emerged as an issue of great environmental concern. Contamination of soil by improper disposal or spillage of petrochemicals and products containing petroleum hydrocarbons is one of such ...
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(University of Pretoria, 2015)Polycyclic aromatic hydrocarbons (PAHs) are a diverse class of toxicants that are ubiquitously and persistently present in the environment. These compounds present a risk for human health and the environment, as they are ...
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(University of Pretoria, 2009-04-09)In the forest products industry the opportunity exists to extract currently under-utilised compounds from the process or waste streams and thereby derive more value from the wood entering the process. A big portion of the ...
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(University of Pretoria, 2019)Degradation of organic contaminants in wastewaters emanating from industrial processing plants could render the water streams reusable for the purpose of reducing water consumption while protecting the environment from ...
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(University of Pretoria, 2013)Sedimentation is a fundamental operation in wastewater treatment works. A rational design of sedimentation tanks is currently achieved by plotting iso-percentile (iso-percentage) concentration removal profiles from ...
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(University of Pretoria, 2017)Forward Osmosis (FO) is an emerging technology which has potential to operate with minimum energy input. High performance of FO systems depend on the availability of a suitable Draw Solution. Different types of Draw Solutions ...
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(University of Pretoria, 2020-08-27)The challenge of economical separation of tiny microalgal cells from dilute solution restricts their industry commercialization as promising biosorbents. In the fundamental work of this thesis, self-flocculating microalga ...
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(University of Pretoria, 2022)Environmental pollution is a global problem that affects both developed and developing countries by contaminating soil and water, threatening biodiversity, ecosystems, and human health. South Africa holds the largest chrome ...
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(University of Pretoria, 2013)Water scarcity has become a global problem due to diminishing water resource and pollution of the remaining resources. The problems arising fromwater scarcity are exacerbated rapid urbanisation and industrialisation. ...
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(University of Pretoria, 2014)An indigenous mixed culture of bacteria collected from a Wastewater Treatment Plant (Brits, North West Province, South Africa), biocatalytically reduced Cr(VI) in the presence of As(III). Both the reduced chromium (Cr(III)) ...
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(University of Pretoria, 2009-12-09)South Africa currently faces multiple Cr(VI) contamination problems which are unsuccessfully remediated using available technologies. Cr(VI) is highly toxic, carcinogenic and mutagenic in nature and it is exclusively ...
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(University of Pretoria, 2020-06)Coal use in electricity generation has attracted much attention recently mainly due to the sector been identified as the main source of sulphur dioxide (SO2) emissions globally. The combustion of coal releases sulphur ...
Now showing items 1-20 of 35