Browsing Magister Scientiae - MSc (Chemistry) by Author "Petrik, Leslie F."
Now showing items 1-16 of 16
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Brine treatment using natural adsorbents
Mabovu, Bonelwa (University of the Western Cape, 2011)The current study investigated application of natural adsorbents in brine treatment. Brines are hypersaline waters generated in power stations and mining industries rich in Mg2+, K+, Ca2+, Na+, SO4 2- , Cl- and traces of ... -
Brine treatment using natural adsorbents
Mabovu, Bonelwa (University of the Western Cape, 2011)Studies involving the use of natural clays such as bentonite, montmorillonite and natural zeolite clinoptilolite in water treatment have been reported. Researchers suggested cost effective processes, such as ion-exchange ... -
Cation-exchanged zeolites-A prepared from South African fly ash feedstock for CO2 adsorption
Muvumbu, Jean-Luc Mukaba (University of the Western Cape, 2015)In South Africa coal combustion constitutes up to 90 % of the country’s energy need. This coal combustion activity is known to contribute to the amount of about 40 % of the total CO2 atmospheric emissions worldwide that ... -
Characterization and chemical speciation modelling of saline effluents at Sasol Synthetic Fuels Complex-Secunda and Tukuta power station
Nyamhingura, Amon (University of the Western Cape, 2009)The study shows conclusively that brine composition and concentration is highly variable at these South African power utilities and processes such as RO, contact with ash and CO2 ingress can have an impact upon the overall ... -
Chemical, physical and morphological changes in weathered brine slurried coal fly ash
Nyale, Sammy Mwasaha (University of the Western Cape, 2011)Energy production from coal comes with an environmental cost because of the toxic waste produced during coal combustion such as coal ash and brine which are potential water and soil pollutants. Coal ash and brine contain ... -
CO2 sequestration using brine impacted fly fish
Muriithi, Grace Nyambura (University of the Western Cape, 2009)It was hypothesized that South African FA and brine could sequester CO2 through mineral carbonation. A statistical approach was undertaken to optimize the % CaCO3 formed from FA/brine/CO2 interaction with input parameters ... -
Homogeneity of nanophase electrocatalysts supported on mesoporous materials
Godongwana, Ziboneni Governor (University of the Western Cape, 2006) -
Hydrothermal synthesis and optimisation of zeolite Na-P1 from South African coal fly ash
Musyoka, Nicholas Mulei (2009)Millions of tonnes of fly ash are generated worldwide every year to satisfy the large demand for energy. Management of this fly ash has been a concern and various approaches for its beneficial use have been investigated. ... -
Multi-component Platinum Group Metals for the methanol electro-oxidation process
Javu, Bulelwa Patricia (University of the Western Cape, 2018)The purpose of this study was to develop a high performance-lower cost catalyst to be applied in Direct Methanol Fuel Cells (DMFC). The study also aimed to prepare plurimetallic supported platinum (Pt), platinum-ruthenium ... -
Photocatalytic activity of supported TiO2 nanocrystals
Totito, Thandiwe Crystal (2013)In recent times, the occurrence and presence of complex recalcitrant toxic contaminants in water and wastewater is increasing and consequently contributes to the non-availability of clean and safe drinking water. Water ... -
Recovery of SiO₂ and Al₂O₃ from coal fly ash
Sedres, Grant (University of the Western Cape, 2016)Most of the world's energy production is still mainly achieved by the combustion of coal in power stations. Coal fly ash is the inevitable waste product that accumulates to metric ton volumes each year. These vast volumes ... -
Removal of sulphates from South African mine water using coal fly ash
Madzivire, Godfrey (University of the Western Cape, 2009)This study evaluated SO4 2- removal from circumneutral mine water (CMW) collected from Middleburg coal mine using coal FA collected from Hendrina power station. The following parameters were investigated: the effect of the ... -
Sorption properties of natural zeolites for the removal of ammonium and chromium ions in aqueous solution
Ndayambaje, Guillaume (University of the Western Cape, 2011)There are huge amount of natural clinoptilolite available in South Africa which can be utilised for wastewater treatment of ammonia and chromium if their characteristics are properly known. However, these deposits have not ... -
Synthesis and characterization of micro- and mesoporous materials for low temperature selective catalytic reduction of nitrogen oxides
Kasongo Wa Kasongo, Jean B. (University of the Western Cape, 2011)In summary, it has been shown during this study that bimetallic Fe and Mn containing catalysts can be prepared by wet impregnation and not by ion exchange because of the competition between two different metals at different ... -
Synthesis, characterization and physicochemical properties of platinum naboparticles on ordered mesoporous carbon
Saban, Waheed (University of the Western Cape, 2011)In this study SBA-15 mesoporous silica template was synthesized and used as a sacrificial template in the preparation of ordered mesoporous carbon material. A chemical vapour deposition (CVD) technique using LPG or ... -
Treatment of brines using commercial zeolites and zeolites synthesized from fly ash derivative
Sonqishe, Thantaswa Millecent (University of the Western Cape, 2008)The objectives of this project was to ameroliate two waste materials, namely Acid Mine Drainage and Fly Ash and recover the solid residues for conversion into an adsorbent to treat brine. The solid residues were then ...