Synthesis of thiol‐functionalized resin and its adsorption of heavy metal ions

Abstract

Abstract In this study, the thiol‐functionalized resin (PMA‐SH) was prepared directly by a one‐step reaction of polymethyl acrylate resin (PMA) and 1,2‐ethanedithiol, and it was applied to the adsorption of Pb 2+ , Ni 2+ , and Hg 2+ in aqueous solution. The effects of initial concentration, temperature, contact time, and electrolyte on the adsorption of Pb 2+ , Ni 2+ , and Hg 2+ were investigated. At 308 K, the saturated adsorption capacity of PMA‐SH on Pb 2+ , Ni 2+ , and Hg 2+ is found to be 0.94, 0.88, and 0.41 mmol/g, respectively. In addition, the experimental adsorption data were consistent with the Redlich–Peterson model and pseudo‐second‐order kinetic model. Overall, PMA‐SH exhibited good reuse performance as well as excellent adsorption performance for Pb 2+ , Ni 2+ , and Hg 2+ .