Synthesis and Characterization of Zeolite Templated Carbon and Usage as Adsorbent for Removal of Pb(II) Ions from Solution

Abstract

In this study, the porous carbon was prepared through templated synthesis method using the natural zeolite as template and sugar as carbon source. The porous carbon was obtained at a carbonization temperature of 700^oC with a weight ratio 1:1 for zeolite and sugar. The physical, structural and surface properties of the porous carbon were characterized with the scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), elemental analysis and nitrogen (N₂) adsorption. The specific surface area and total pore volume of carbon were found as 412 m²/g and 0.5515 cm³/g, respectively. This carbon material was used for removal of Pb²⁺ ions from solution. The effects of initial pH, temperature and contact time on adsorption were studied. The maximum Pb²⁺ removal was observed at pH=5. The adsorption was reached to the equilibrium in 120 minutes. Various kinetic models were used for describing the adsorption kinetic and the pseudo-second order kinetic model showed well fit. Langmuir, Freundlich and Temkin isotherm models were applied to the experimental equilibrium data and Langmuir equation was found as best fitting isotherm. 

Keywords

• Templated carbon,Characterization,Adsorption,Lead

References

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