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Hydrothermal preparation of biochar from spent coffee grounds, and its application for the removal of cadmium from coal tailings leachate
(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 ...