Abstract
Cr(VI) has posed great threat on environmental safety and human health, thus the remediation of Cr(VI) pollution is of considerable importance. The adsorption of Cr(VI) from aquatic solution using activated carbon was studied in this paper. The Cr(VI) sorption was relative to pH, contact time, initial content of solution, adsorbent dose and temperature. The maximum removal efficiencies of Cr(VI) were 97.67%. The maximum adsorption capacity was found to be 4.75 mg/kg. Thermodynamic indexes indicate that the adsorption process was endothermic and spontaneous. Freundlich adsorption isotherm model was fitted well the equilibrium data for the adsorption. The Cr(VI)uptake was best described by pseudo second-order rate model.
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