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

Abstract

A new composite GO-4-HBDTOF is prepared by coating 4-HBDTOF terpolymer on graphene oxide. The terpolymer and composite has been characterized by Fourier Transform Infrared Spectroscopy and Scanning Electron Microscopy analysis. Batch experiments have been 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 effects of contact time, pH and initial concentration of Pb(II) on the adsorption process have been investigated. The equilibrium data is fitted to Langmuir and Freundlich isotherm model. The Langmuir isotherm gives a better representation of data than Freundlich isotherm. From Langmuir adsorption isotherm model, the calculated value of monolayer adsorption capacity for composite is found to be higher than that of terpolymer. Thus, the newly synthesized terpolymer composite can be used as a better adsorbent for the removal of Pb(II) from aqueous solution.