Browsing Philosophiae Doctor - PhD (Chemistry) by Author "Petrik, Leslie"
Now showing items 1-14 of 14
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Advanced oxidative water treatment process using an electrohydraulic discharge reactor and TiO2 immobilised on nanofibres
Okolongo, Gauthier Nganda (University of Western Cape, 2013)The aim of this study was to design and build an electrohydraulic discharge reactor in such a way that the synthetic immobilized TiO2 nanophotocatalytic components could be integrated, for the production of active species ... -
Chemical interactions and mobility of species infly ash-brine co-disposal systems
Fatoba, Ojo Olanrewaju (University of the Western Cape, 2010)The primary aim of these coal fired industries for co-disposing fly ash and brine was to use the fly ash as a sustainable salt sink. It is therefore important to study the interaction chemistry of the fly ash-brine systems ... -
Chemistry and speciation of potentially toxic and radioactive elements during mine water treatment
Madzivire, Godfrey (University of the Western Cape, 2012)Mine water poses a serious environmental challenge and contains elements such as Fe, Al, and Mn in potentially toxic concentrations. The major anion in mine water is sulphate. The complexity and diversity of mine water ... -
Coal fly ash and acid mine drainage based heterogeneous Fe catalysts Friedel-Crafts alkylation reaction
Hlatywayo, Tapiwa (University of Western Cape, 2020)The catalytic support materials used in the present study are zeolite HBEA and MCM-41. These high silica zeolites were synthesised from coal fly ash (CFA) waste via a novel approach that involved a fusion step, acid assisted ... -
Degradation of persistent organic pollutants (pharmaceuticals & dyes) by combined dielectric barrier electrohydraulic discharge system and photo catalysts
Mouele, Emile Salomon Massima (University of the Western Cape, 2019)Water pollution problems have continued to increase not only in South Africa but worldwide due to human activities. The presence of organic toxins and bacteria in water sources is mostly due to population growth, industrial ... -
Determination of toxic elements, rare earth elements and radionuclides in coal fly ash, products and waste
Eze, Chuks Paul (University of the Western Cape, 2014)Coal fly ash has been studied extensively to understand the environmental impacts associated with its disposal, management and reuse. Although several beneficiation processes have been proposed, there has been little or ... -
Fabrication of nanomaterials from biomass for adsorption and antimicrobial applications
Uche, Cosmas Chinedu (University of the Western Cape, 2020)The Black soldier fly (BSF) is an environmentally friendly and sustainable insect utilised in the decomposition of organic waste. This is due to its voracious consumption capability, disruptive functions and economic ... -
Functionalisation of electrospun nanofibre for lanthanide ion adsorption from aqueous solution
Pereao, Omoniyi Kolawole (University of the Western Cape, 2018)Rare earth elements (REEs) have widespread use and importance for industrial applications due to their metallurgical, optical and electronic properties. Several typical hydrometallurgical techniques such as adsorption, ... -
Functionalisation of polymer nanofibres and track-etched membrane removal of organic and and inorganic pollutants from water
Bode-Aluko, Chris Ademola (University of the Western Cape, 2017)Organic and inorganic pollutants are two broad classes of pollutants in the environment with their main sources from waste waters that are indiscriminately dumped from chemical related industries. Among the organic ... -
Method development for selective recovery of rare earths elements from phosphogypsum waste
Muvumbu, Jean-Luc Mukaba (University of Western Cape, 2021)The need for rare earth elements (REEs) in current technologies has motivated countries with high imports dependency to search for alternatives sources. Several studies have been carried out to investigate the feasibility ... -
Optimisation of biodiesel production via different catalytic and process systems
Babajide, Omotola Oluwafunmilayo (University of the Western Cape, 2011)The production of biodiesel (methyl esters) from vegetable oils represents analternative means of producing liquid fuels from biomass, and one which is growing rapidly in commercial importance and relevance due to increase ... -
Preparation and characterization of highly active nano pt/c electrocatalyst for proton exchange membrane fuel cell
Ying, Qiling (University of the Western Cape, 2006)Catalysts play an essential role in nearly every chemical production process. Platinum supported on high surface area carbon substrates (Pt/C) is one of the promising candidates as an electrocatalyst in low temperature ... -
Swift heavy ion irradiation of polyester and polyolefin polymeric film for gas separation application
Adeniyi, Olushola Rotimi (University of the Western Cape, 2015)The combination of ion track technology and chemical etching as a tool to enhance polymer gas properties such as permeability and selectivity is regarded as an avenue to establish technology commercialization and enhance ... -
Synthesis of ZSM-5 zeolite from South African fly ash and its application as solid catalyst
Missengue-Na-Moutoula, Roland (University of the Western cape, 2016)Zeolites are widely used as environmentally friendly solid catalysts or catalyst supports in the refining and petrochemical industries. ZSM-5 zeolite is composed of a three-dimensional medium pore structure (openings of ...