Abstract
The removal efficiency of Cu2+ from aqueous solutions was investigated using Sphagnum peat as adsorbent. A 24 full factorial central orthogonal design was successfully employed for experimental design and analysis of the results. The combined effect of initial concentration of Cu2+ in aqueous solution (C0, mg/L), peat dose (G, g/L), pH and time (t, min) was studied and optimized using Response Surface Methodology (RSM). The optimum C0*, G*, pH* and t* were found to be 57.163 mg/L, 34.198 g/L, 4.72, 69.44 min respectively, in this point the removal efficiency is the maximum one (100% given by empirical model and 98.32 % verified experimentally).
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