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Abstract
Activated carbons were prepared from olive stones and used to remove Cu(II) from water. Activated carbon was prepared from stones of olive grown in Egypt (Egazi olive cultivar sp.) using chemical and physical activation methods. Olive stones wastes (OSW) were first charred at 275{u00B0}C for different lengths of time (30-60 min) without or with different ratios of KOH, ZnCl2, or H3PO4 adsorption of Cu(II) using the prepared activated carbons under different conditions of contact time (1, 2, 4, 6 and 24h), pH (3, 5 and 6), temperature (30, 45 and 60{u00B0}C) and concentration of copper (0.001, 0.01 and 0.05) was studied. The kinetics of the adsorption using physically and chemically activated carbon were also studied. (1:1, 1:2 and 1:4) followed by activation at different temperatures (600, 700 and 800{u00B0}C) for different lengths of time (30, 60 and 90 min). The effect of charring process on yield and iodine number (as a measure of surface area) of produced char was studied. The effect of the different parameters of the activation processes on yield, iodine number, and surface area was also studied. Microstructure of the obtained activated carbon was studied using scanning electron microscopy SEM