Adsorption of Pb (II) ions from aqueous solutions using polycresol film fabricated by cyclic voltammetry
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چکیده
Polycresol p (o-cresol) has been synthesized by cyclic voltammetry technique in acidic medium using sulfuric acid as an electrolyte at 30 o C. The electrosynthesized polymer was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The adsorption properties of the fabricated polymer were investigated for adsorptive removal of Pb (II) ions from aqueous solutions. Various physico-chemical parameters such as pH, initial metal ion concentration, and equilibrium contact time were studied. Optimum conditions were found to be 6 for pH and 4 h for contact time. In addition, the adsorption isotherms were obtained using Pb(II) solutions of concentrations ranging from 50 to 250 mg/l. The adsorption process was found to follow pseudo-second-order reaction kinetics and Freundlich adsorption isotherms.
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تاریخ انتشار 2014