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Now showing items 11-20 of 27
Hydrothermal synthesis, characterization and adsorption testing of MoS2-Zeolite for the removal of lead in an aqueous solution
(EARET, 2018)
The shortage of water can be worsened by the
pollution of limited water resources by industrial activities such as
mining which contribute to significant level of toxic heavy metals
in the environments. Heavy metals ...
Sol-gel preparations of ZnO/SnO2 composite photocatalysts applied for the degradation of PAH’s under visible light
(EARET, 2018)
Wastewater treatment challenges faced by
conventional methods have necessitated the need for
alternative/complementary methods that are environmentally
benign and efficient especially toward recalcitrant organic
pollutants. ...
Removal of COD from biodiesel wastewater using a hydrophobic polymer
(EARET, 2018)
Biodiesel production is increasing internationally as
an alternative fuel. This is due to the rapid depletion of
non-renewable energy sources. Pure biodiesel product can be
obtained by washing the product with hot water. ...
Mineralogical observation made during the kinetic dissolution study of chalcopyrite mineral in sulphate media under free pH at room temperature
(EARET, 2018)
An attempt to determine the various
phenomena at play and leaching mechanism of chalcopyrite
dissolution, was conducted on a chalcopyrite concentrate.
The study was performed at atmospheric conditions (room
temperature) ...
Effect of temperature on the performance of Rheofloc: conductivity removal from RO-reject
(EARET, 2018)
South Africa is an arid country with an annual
average rainfall less than half of the world’s average rainfall. The
industrial sector uses 11% of this limited amount of water. Eskom
is one of these users. Within the ...
Brewery effluent sludge characterization and dewatering to increase potential water recycling capabilities
(EARET, 2018)
In this study various coagulants and flocculants were
tested for optimum removal of COD from brewery wastewater.
The coagulants used were ferric chloride and an organic coagulant
mixture obtained from the brewery company. ...
Column leaching of fine coal tailings: impact on environment and thickener operation
(EARET, 2018)
The coal mining sector is synonymous with
generating large quantities of waste. A comprehensive
fraction of the waste is classified as fines (-500 µm) and
ultrafine (-100 µm) particles, which accounts eleven per
cent ...
Effect of fine coal tailing porosity on the mobility and speciation of heavy metals in the leachates
(EARET, 2018)
The effect of porosity of coal tailings on the
mobilization and speciation of heavy metals is important for the
implementation of management strategies. In this study, column
leaching experiments were carried out to ...
Reduction of salinity of water using acrylamide-based polyampholyte
(EARET, 2018)
Polyampholytes are charged macromolecules, which carry both acidic and basic groups. These groups dissociate, leaving ions on chains and counter ions in solution, under appropriate conditions, ...
Prediction of dissolution of copper from a chalcopyrite carbonatite ore of South Africa
(EARET, 2018)
Chalcopyrite accounts for 70% of all copper bearing
minerals and therefore has been studied closely to understand the
dissolution kinetics in hope of overcoming the passivation film and
increasing the extraction rates ...