Browsing Research Articles (ENS) by Title
Now showing items 13-26 of 26
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Novel zeolite Na-X synthesized from fly ash as a heterogeneous catalyst in biodiesel production
(Elsevier, 2012)Several studies have been carried out on the production of biodiesel using different heterogeneous catalysts but this study has been able to demonstrate the prospect of utilizing South African class F fly ash as a raw ... -
Organic nanostructured materials for sustainable application in next generation solar cells
(MPDI, 2021)Meeting our current energy demands requires a reliable and efficient renewable energy source that will bring balance between power generation and energy consumption. Organic photovoltaic cells (OPVs), perovskite solar ... -
Plasmonic metal decorated titanium dioxide thin films for enhanced photodegradation of organic contaminants
(Elsevier, 2017)Photocatalysis using titanium dioxide as photocatalyst is an efficient way for the removal of organic contaminants in water using solar energy. In this study, thin films of copper and silver were deposited on fused ... -
Polyester sulphonic acid interstitial nanocomposite platform for peroxide biosensor
(MDPI, 2009)A novel enzyme immobilization platform was prepared on a platinum disk working electrode by polymerizing aniline inside the interstitial pores of polyester sulphonic acid sodium salt (PESA). Scanning electron microscopy ... -
Quantification of radicals generated in a sonicator
(Iranian Chemical Society, 2016)The hydroxyl radical (OH•) is a powerful oxidant produced as a consequence of cavitation in water. It can react nonspecifically in breaking down persistent organic pollutants in water into their mineral form. It can also ... -
Rare earths’ recovery from phosphogypsum: An overview on direct and indirect leaching techniques
(MDPI, 2021)The need for rare earth elements (REEs) in high-tech electrical and electronic-based materials is vital. In the global economy, deposits of natural REEs are limited except for countries such as China, which has prompted ... -
Silver/carbon codoped titanium dioxide photocatalyst for improved dye degradation under visible light
(Hindawi Publishing Corporation, 2017)Herein, we report the synthesis of quartz supported TiO2 photocatalysts codoped with carbon and silver through the hydrolysis of titanium tetrachloride followed by calcination at 500°C. The prepared samples were characterized ... -
Statistical testing of input factors in the carbonation of brine impacted fly ash
(Taylor & Francis, 2012)A D-optimal design was applied in the study of input factors: temperature, pressure, solid/liquid (S/L) ratio and particle size and their influence on the carbonation of brine impacted fly ash (FA) determined. Both ... -
Synthesis and characterization of carbon doped TiO2 photocatalysts supported on stainless steel mesh by sol-gel method
(Korean Carbon Society, 2017)This study synthesized pure anatase carbon doped TiO2 photocatalysts supported on a stainless steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl4. The influence of the pyrolysis ... -
Synthesis of hydroxy sodalite from coal fly ash for biodiesel production from waste-derived maggot oil
(MDPI, 2019)Zeolites are aluminosilicate crystalline materials known for their unique characteristics, and have been prominent for nearly half a century due to their wide and important industrial applications. The production of zeolites, ... -
Synthesis of zeolites Na-P1 from South African coal fly ash: effect of impeller design and agitation
(MDPI, 2013)South African fly ash has been shown to be a useful feedstock for the synthesis of some zeolites. The present study focuses on the effect of impeller design and agitation rates on the synthesis of zeolite Na-P1 which are ... -
Treatment of persistent organic pollutants in wastewater using hydrodynamic cavitation in synergy with advanced oxidation process
(Springer, 2017)Persistent organic pollutants (POPs) are very tenacious wastewater contaminants. The consequences of their existence have been acknowledged for negatively affecting the ecosystem with specific impact upon endocrine disruption ... -
Use of coal fly ash as a catalyst in the production of biodiesel
(Slovnaft VÚRUP, 2010)South Africa is largely dependent on the combustion of coal for electricity production; Eskom’s coalfired power stations consume approximately 109 million tons of coal per annum, producing around 25 million tons of ash, ... -
Waste minimization protocols for the process of synthesizing zeolites from South African coal fly ash
(MDPI, 2013)Production of a high value zeolite from fly ash has been shown to be an avenue for the utilization of South African fly ash which presently constitutes a huge disposal problem. The synthesis of zeolites Na-P1 and analcime ...