Original Articles
Salmani M. H., Abedi M. and Mo
Abstract
Lead is one of the heavy metals, highly toxic to humans and can cause damaging effects even at very low concentrations. It is necessary that the high concentration of lead in aquatic decrease to permissible level. Carbonized pomegranate peels modified with iron have been investigated for removal of Pb(II) ions from aqueous solution. The effective factors were optimized by batch adsorption using factorial design approach to obtain the best model Pb(II) biosorption. All experiments were performed at Lab temperature (25ºC), contact time 90 min, and initial pH of 6.5. The 54 experiment designing of factorial design were done for optimization conditions. Maximum removal efficiency was calculated as 80.1% and 90.4%for Fe3+ andFe2+impregnated pomegranate peel carbons respectively. Mass adsorbent was found as the most significant factor with F= 25.657 and = 0.001 at 0.05% significant level. The results described in this study showed that carbonized pomegranate peels impregnated with Fe2+ions had high removal efficiency for treatment of Pb(II) from waters and developed a model to predict Pb(II) removal in a batch biosorption process.