Browsing by Advisor/Supervisor
Now showing items 1-20 of 21
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Carbon dioxide capture from flue gases using dry sorbents
(North-West University (South Africa), 2021)The project entails capturing CO₂ produced from industrial flue gases with dry adsorbents through gas adsorption to mitigate the CO₂ emissions. Four commercially available activated carbon samples (CQ006, CQ30P, CQ650 and ... -
Catalytic steam gasification of large coal particles
(North-West University, 2011)Catalytic gasification has been studied extensively in order to develop more efficient and economic coal conversion processes. Fundamental studies regarding catalytic gasification have thus far focused on experimentation ... -
Co-pyrolysis of torrefied biomass and coal : product evaluation and reaction modelling
(North-West University (South Africa)., 2022)The co-utilization of biomass and coal in existing coal-based conversion technologies has received increasing interest for its ability to reduce the dependence on fossil fuels and produce high quality products. However, ... -
Comparison of industrial wastes as binder in the agglomeration of coal fines
(North-West University (South Africa)., 2021)The industries that consumed the most coal in South Africa, in 2015, were electricity generation, 53%, basic iron and steel manufacturing, 20%, and synthetic fuel and chemical industries, 10%, with the rest being used in ... -
Development and improvement of pretreatment technologies to enhance ferrochrome production
(North-West University (South Africa)., 2016)Ferrochrome (FeCr) is a vital alloy mostly used for the production of stainless steel. It is produced from chromite ore, the only economically exploitable natural chromium (Cr) resource, ttirough carbothermic smelting ... -
The effect of microalgae as a binder on the characteristics of agglomerated coal fines
(North-West University (South Africa), 2021)The global coal demand is increasing at an alarming rate, while reserves are depleting. This creates the need for more coal to be produced or to introduce an alternative approach that is more sustainable. The processing ... -
The effect of mineral addition on the pyrolysis products derived from typical Highveld coal
(2014)Mineral matter affect various coal properties as well as the yield and composition of products released during thermal processes. This necessitates investigation of the effect of the inherent minerals on the products derived ... -
The effect of vanadium oxidation states on the conversion of hydrogen sulphide to elemental sulphur
(North-West University (South Africa), 2020)The formation of toxic hydrogen sulphide (H₂S) gas as a by-product is unavoidable during production of fuels and other chemicals from coal, crude oil, and natural gas. There are different processes available to recover H₂S ... -
Fuel bed evaluations and coal properties transformation in a Sasol–Lurgi fixed bed dry bottom gasifier operating on North Dakota lignite
(North-West University, 2008)The growth in coal consumption worldwide as well as the high oil prices in the recent past has led to the current increased interest in the application of coal gasification technologies. The Sasoi-Lurgi Fixed Bed Dry Bottom ... -
Gasification and combustion kinetics of typical South African coal chars
(2015)An investigation was undertaken to compare the kinetics of combustion and gasification reactions of chars prepared from two South African coals in different reaction atmospheres: air, steam, and carbon dioxide. The two ... -
The influence of CO? on the steam gasification rate of a typical South African coal
(North-West University, 2013)It is recognised that the reactions with steam and CO2 are the rate limiting step during coal gasification, and a vast number of studies has been dedicated to the kinetics of these reactions. Most studies were carried out ... -
The influence of minerals content and petrographic composition on the gasification of inertinite rich high ash coal
(North-West University, 2010)Coal particles with different densities have different mineral and maceral compositions and this affects the gasification reaction rates, especially in coals with high ash contents. This study involved the characterization ... -
The influence of particle size and density on the combustion of Highveld coal
(2011)Coal from the Highveld seam 4 deposit was studied to determine and understand the influence of density and particle size on the high temperature combustion characteristics. All of the charring, as well as the combustion ... -
The influence of particle size and devolatilisation conditions on the CO2 gasification of Highveld coal
(North-West University, 2011)The influence of particle size and devolatilisation conditions on the CO2 reactivity of Highveld seam 4 run of mine coal were investigated in a large particle thermo–gravimetric system. Particle sizes of 5 mm, 10 mm, 20 ... -
The influence of particle size on the steam gasification kinetics of coal
(North-West University, 2011)Steam gasification has been extensively researched in order to optimise and efficiently utilise coal. Reactivity on powdered coal has received considerable attention, however, due to equipment limitation large coal particle ... -
Low-smoke fuel production via low temperature pyrolysis of lump coal
(North-West University (South Africa) , Potchefstroom Campus, 2016)Coal is used on a large scale in the Kwadela Township, Mpumalanga, South Africa with the means to fulfil the basic energy requirements of low-income households. Energy within the coal is utilised via combustion thereof in ... -
A metallurgical coke replacement derived from torrefied wood chips pre-treated by wet oxidation
(North-West University (South Africa)., 2022)The global population is ever increasing resulting in an ever-increasing energy demand and reliance of fossil fuels which has increased over the past few decades. The production of coke relies on the availability, cost and ... -
Product evaluation and reaction modelling for the devolatilization of large coal particles
(North-West University, 2012)A fundamental understanding of the process of devolatilization requires extensive knowledge of not only the intrinsic properties of the parent coal and its subsequent formed products (tars, gases and chars), but also its ... -
Production of a metallurgical coke substitute from biochar depolymerised by wet oxidation
(North-West University (South Africa), 2020)Coke production relies on the availability, cost and quality of coking coal. Depleting coking coal resources and environmental pressure force the metallurgical industry to search for alternative methods to produce coke. ... -
SEM image processing as an alternative method to determine chromite pre-reduction
(2015)Ferrochrome (FeCr) is a crude alloy containing chromium (Cr) and iron (Fe). FeCr is mainly used for the production of stainless steel, which is an important modern-day alloy. FeCr is produced from chromite ore through ...