Lead and chromium removal from water solutions using the basic oxygen furnace slag was investigated. Calcium, iron, and silica were the main components of the slag. The samples were characterized by means of the thermal, surface, and mineralogical analysis and infrared spectroscopy. The experiments were performed at the ambient temperature. Chromium adsorption proceeded according to the Langmuir isotherm and lead adsorption proceeded according to the Freundlich isotherm. The sorption capacity over 150 mg/g was reached for chromium and the value was higher than 250 mg/g for lead. Kinetic data were analysed using the pseudo-first, pseudo-second and intra-particle diffusion models. Adsorption data of chromium were correlated with the pseudo-second-order kinetic model and lead sorption was very quick and the models could not be applied.Keywords: Chromium, lead, slag, adsorption
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