Preparation of a novel Poly-chloromethyl styrene chelating resin containing heterofluorenone pendant groups for the removal of Cu (II), Pb (II), and Ni (II) from wastewaters

Abstract Poly-chloromethyl styrene (CPS) was used as a carrier to synthesize a poly-chloromethyl styrene chelating resin (CPS-DI) containing heterofluorenone side groups with 4, 5-diazafluoren-9-one. The adsorption performance of the chelating resin on Cu (II), Ni (II), and Pb (II) was studied by batch experiments. Results show that CPS-DI chelating resin has a high affinity for Cu (II), Pb (II), and Ni (II) ions. The maximum adsorption capacities of Cu (II), Pb (II), and Ni (II) are 2.55, 1.34 and 0.94 mmol/g resin, respectively. The parameters on thermodynamic give the adsorption process spontaneous, and a higher temperature is beneficial to the adsorption process. CPS-DI chelating resin has excellent reusability. The column experiment simulates the adsorption process of CPS-DI chelating resin to metal ions, indicating that CPS-DI chelating resin can treat and recover heavy metal ions such as Cu (II), Pb (II), and Ni (II), effectively solve the problem of advanced treatment of wastewater containing heavy metal ions.