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The evaluation of the mechanisms involved in the extraction of nickel from low concentration effluents by means of supported liquid membrane
(North-West University, 2004)
From an economic point of view, the use of membranes at the present time is intermediate between the development of first generation membrane processes and second generation processes such as supported liquid membranes. ...
Single and binary gas transport of H2, CO and CO2 through a NaA-centrifugally casted alumina composite membrane
(North-West University, 2006)
NaA (or Linde Type A: [Na+12 (H20)27]8 [Al12Si12O48]8 -LTA) membranes were
prepared on centrifugally casted alumina supports and tested for its permeation and
separation properties using single gasses and binary mixtures ...
Characterisation and reaction kinetics of high ash chars derived from inertinite-rich coal discards
(North-West University, 2007)
An investigation was undertaken to determine the gasification and combustion characteristics of chars derived from an inertinite-rich coal discard sample with a high ash content. Fundamental knowledge of the reaction rate ...
Sulphur dioxide capture under fluidised bed combustion conditions using dolomite and coal ash as sorbents
(North-West University, 2007)
A study was done to investigate sulphur dioxide capture capacities of South African mined dolomites, limestone and coal ash derived from high inertinite coal. The study was carried out under atmospheric and pressurised ...
Characterisation and fluidised bed gasification of selected high-ash South African coals
(North-West University, 2008)
South Africa has abundant coal reserves and produces approximately 75 % of its primary energy from coal. Based on scientific analysis, however, it is generally accepted that a link exists between climate change and the use ...
Determination of the kinetic models and associated parameters for the low temperature combustion and gasification of high-ash coal chars
(North-West University, 2003)
South Africa has large coal reserves and the power generation industry produces
approximately 95% of the electricity from coal. Most of the high-grade coal is exported
leaving behind a discard of high ash coal. For the ...
The direct conversion of synthesis gas to chemicals
(Potchefstroom University for Christian Higher Education, 2002)
The catalytic conversion of synthesis gas, obtainable from the processing of coal, biomass or natural gas, to a complex hydrocarbon product stream can be achieved via the Fischer-Tropsch process. The Fischer-Tropsch synthesis ...
Dewatering of fine coal with flowing air using low pressure drop systems
(North-West University, 2006)
Successful dewatering and filtration of coal fines remain the major obstacles in
preventing the extensive re-use of large reserves of high calorific quality coal fines as an additional energy source in South Africa. The ...
Gas separation of steam and hydrogen mixtures using an ?-alumina-Alumina supported NaA membrane
(North-West University, 2007)
In this study, the feasibility of a NaA zeolite membrane for the gas phase separation of steam and hydrogen mixtures was determined. The Fischer-Tropsch (FT) process, which produces high value fuels and chemicals from coal ...
Sulphur dioxide capture under fluidized bed combustion conditions
(North-West University, 2005)
An investigation was undertaken to determine the desulphurization properties of industrially available dolomites for use in fluidized bed (coal) combustion (FBC). The performance and kinetics of sulphur dioxide capture ...