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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 ...
Nickel recovery from spent electrolyte by nanofiltration
(North-West University, 2007)
South Africa is the world's leading producer of Platinum Group Metals (PGMs) and holds more than 80% of the world's reserves. Although PGMs are the most important
products in the ores, base metals are valuable by-products, ...
Separation by pervaporation of methanol from tertiary amyl methyl ether using a polymeric membrane
(Potchefstroom University for Christian Higher Education, 2003)
In this study, the sorption and pervaporation characteristics of the commercial PERVAP2256® membrane with methanol and tert-amyt methyl ether (TAME) mixtures were investigated. The feed concentration and the feed temperature ...
The effect of molecular weight on the absorption enhancing properties of n-trimethyl chitosan chloride
(North-West University, 2008)
Delivery problems have limited the uptake of many promising new peptides drugs. The co-administration of absorption enhancing agents such as H-Trimethyl chitosan chloride (TMC), a chitosan derivative, has been proven. 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 ...