Browsing by Author "Petrik, Leslie F."
Now showing items 1-20 of 29
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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 ... -
Degradation of bisphenol-a and 2-Nitrophenol by combined advanced oxidation technologies
Tijani, Jimoh Oladejo (University of the Western Cape, 2015)Emerging micropollutants such as bisphenol-A and 2-nitrophenol present a great threat in drinking water due to their adverse effects. Most conventional technologies in water and wastewater treatment are not designed to ... -
Extraction, fractionation, nanoparticles formulation, and antimicrobial activity of lipids from black soldier fly larvae
Omores, Raissa Andong (University of Western Cape, 2021)Hermetia illucens (Diptera: Stratiomyidae) known as the black soldier fly (BSF) is an efficient ecological organic waste decomposer. Its larvae grow through six larval instars on a variety of decomposing organic substrates ... -
Geochemical and mineralogical evaluation of toxic contaminants mobility in weathered coal fly ash: as a case study, Tutuka dump site, South Africa
Akinyemi, Segun Ajayi (University of the Western Cape, 2011)The management and disposal of huge volumes of coal combustion by products such as fly ash has constituted a major challenge to the environment. In most cases due to the inadequate alternative use of coal fly ash, the ... -
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. ... -
Identification and quantification of chemicals of emerging concern (persistent organic and inorganic pollutants) in some selected marine environments of cape town, South Africa
Ojemaye, Cecilia Yejide (University of the Western Cape, 2020)The increasing evidence of chemicals of emerging concern (CECs) in water bodies is causing major concern around the world because of their toxicological effects upon humans and aquatic organisms. The release of wastewater ... -
Identification, separation and quantification of persistent organic pollutants using capillary electrophoresis
Omoniyi, Emmanuel Oluseyi (University of the Western Cape, 2022)Water quality deterioration and scarcity can be attributed to natural causes and anthropogenic activities which include climate change and an incessant industrialisation, yet with lack of functional and reliable wastewater ... -
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 ... -
Pt Nanophase supported catalysts and electrode systems for water electrolysis
Petrik, Leslie F. (University of the Western Cape, 2008)In this study novel composite electrodes were developed, in which the catalytic components were deposited in nanoparticulate form. The efficiency of the nanophase catalysts and membrane electrodes were tested in an important ... -
Re-use of South African fly ash for CO2 capture and brine remediation.
Muriithi, Grace Nyambura (University of the Western Cape, 2013)Coal combustion accounts for 95% of electricity generation in South Africa while globally coal combustion for energy generation stands at 42%. It has been predicted that coal utilization for energy generation will continue ... -
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 ...