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Removal And Recovery Of Heavy Metals By Nickel Smelter Slag, Maame Kyeiwaa Addai

Electronic Thesis and Dissertation Repository

The research was performed to assess the potential of nickel smelter slag, an industrial waste, as an adsorbent in the removal of heavy metals from solution. Results from batch studies on the effect of pH, metal-slag contact time, particle size, competition by other ions and slag dose were used to estimate the optimum adsorption conditions of the slag as an adsorbent for Cu, Pb, Cd, Ni and Zn. Adsorption of Cu and Pb were akin to the pseudo second order kinetic model and followed the Langmuir adsorption isotherm model. The calculated k₂ values were 0.18 mg g^-1min …