Synthesis and application of new composite terpolymer for the removal of lead from aqueous solution

Abstract

In this study, a new composite GO-4-HBDTOF was prepared by coating 4-HBDTOF terpolymer on graphene oxide. The terpolymer and composite were characterized by Fourier Transform Infrared Spectroscopy and Scanning Electron Microscopy analysis. Batch experiments were carried out to evaluate efficiency of the sorbents 4-HBDTOF and GO-4-HBDTOF composite for the removal of Pb(II) ion from aqueous solutions. The effect of contact time, pH and initial concentration of Pb(II) on the adsorption process were investigated. The equilibrium data were fitted to Langmuir and Freundlich isotherm model. The Langmuir isotherm gave a better representation of data than Freundlich isotherm. From Langmuir adsorption isotherm model the calculated value of monolayer adsorption capacity for composite was found to be higher than that of terpolymer. Thus the newly synthesized terpolymer composite can be used as better adsorbent for the removal of Pb(II) from aqueous solution.