Browsing Faculty of Engineering by Subject "Cadmium"

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Adsorption of metal ions from fine coal tailings dump waste water using bio-char

Fosso-Kankeu, Elvis; Weideman, Reinhardt; Moyakhe, Dumisane; Campbell, Quentin; Waanders, Frans (EARET, 2018)

Coal mining operations produce large amounts of tailings which contains heavy metals. Heavy metals such as cadmium (Cd) can cause environmental problems. The adsorption capacities of biochars produced from spent coffee ...
Biosorption of cadmium from water using surfactant impregnated eggshell

Fosso-Kankeu, Elvis; Steenekamp, Gerhard; Akinpelu, Enoch; Waanders, Frans (EARET, 2018)

Cadmium (Cd) is regarded as one of the most toxic elements and it causes water pollution when it exceeds the permissible limit. It is currently present in the Mooi River above these permitted levels, and must therefore ...
Hydrothermal preparation of biochar from spent coffee grounds, and its application for the removal of cadmium from coal tailings leachate

Fosso-Kankeu, E.; Weideman, R.; Moyakhe, D.; Waanders, F.B.; Le Roux, M.; Campbell, Q.P. (SAIMM, 2019)

Spent coffee grounds were transformed into biochar using a hydrothermal method. Some of the biochar product was pre-treated through surfactant impregnation with sodium dodecyl sulphate (SDS) to enhance its adsorption ...