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Now showing items 11-20 of 26
Chitosan/PEO nanofibers electrospun on metallized track-etched membranes: fabrication and characterization
(Elsevier, 2021)
The development of next-generation adsorption, separation, and filtration materials is growing with an increased research focus on polymer composites. In this study, a novel blend of chitosan (CS) and polyethylene oxide ...
Fate of sulphate removed during the treatment of circumneutral mine water and acid mine drainage with coal fly ash: Modelling and experimental approach
(Elsevier, 2011)
The treatment of acid mine drainage (AMD) and circumneutral mine water (CMW) with South African coal fly ash (FA) provides a low cost and alternative technique for treating mine wastes waters. The sulphate concentration ...
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, ...
Amphibious Horses: Beings in the Littoral and Liminal Contact Zones
(2013)
Horses galloping in littoral zones are represented as embodying wildness, freedom and a prelapsarian quality. Roy Campbell’s ‘The Horses of the Camargue’ includes themes which recur in texts about littoral horses: the ...
Carbonation of brine impacted fractionated coal fly ash: Implications for CO2 sequestration
(Elsevier, 2011)
Coal combustion by-products such as fly ash (FA), brine and CO2 from coal fired power plants have the potential to impact negatively on the environment. FA and brine can contaminate the soil, surface and ground water through ...
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 ...
The H I intensity mapping bispectrum including observational effects
(2021-07-30)
The bispectrum is a three-point statistic with the potential to provide additional information beyond power spectra analyses of
survey data sets. Radio telescopes that broadly survey the 21-cm emission from neutral hydrogen ...
In-situ ultrasonic monitoring of zeolite A crystallization from coal fly ash
(Elsevier, 2012)
In this study, high phase purity of zeolite A was prepared from coal fly ash precursors. The molar regime
of both the clear solution extract and unseparated fly ash slurry was adjusted to achieve the right composition
for ...
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 ...
Low-Cost feedstock conversion to biodiesel via ultrasound technology
(MDPI, 2009)
Biodiesel has attracted increasing interest and has proved to be a good substitute for fossil-based fuels due to its environmental advantages and availability from renewable resources such as refined and waste vegetable ...