Synthesis of a novel Poly-chloromethyl styrene chelating resin containing Tri-pyridine aniline groups and its efficient adsorption of heavy metal ions and catalytic degradation of bisphenol A

• Published in: Separation and purification technology 2021-11, Vol.275, p.119234, Article 119234
• Main Authors: Zou, Binze, Zhang, Shujiang, Sun, Ping, Zhao, Quanlin, Zhang, Wei, Zhang, Xu, Ran, Lang, Zhou, Lincheng, Ye, Zhengfang
• Format: Article
• Language: English
• Subjects: Chelating resin; Environment chemistry; Graft modification; Heavy metal ions adsorption; Wastewater treatment
• ISSN: 1383-5866; 1873-3794
• DOI: 10.1016/j.seppur.2021.119234

•CPS-TA resin has excellent adsorption properties for heavy metal ions.•CPS-TA resin with new structure side group was synthesized by three methods.•Different macromolecular adsorbents can be synthesized by amino group of ligands.•CPS-TA resin has easy separation and good reproducibility.•CPS-TA-Cu can promote the degradation of bisphenol A to some extent. A new type of poly-chloromethyl styrene chelating resin (CPS-TA) containing tri-dipyridine aniline side group was synthesized from poly-chloromethyl styrene (CPS) and 4′-(4-aminophenyl)-2,2′:6′,2-tri-pyridine. The results of batch adsorption experiments show CPS-TA chelating resin has excellent adsorption capacity for Cu (II), Ni (II), and Pb (II), and the maximum adsorption capacity is 5.02, 3.38, and 1.27 mmol/g, respectively. The thermodynamic parameters indicate that the CPS-TA chelating resin adsorption for ions is a spontaneous process. CPS-TA chelating resin has good repeated use performance, and the CPS-TA-Cu formed after adsorption has excellent catalytic performance for H2O2 degradation of bisphenol A. The paper simulates the adsorption process through column experiments, indicating CPS-TA chelating resin could be used to adsorb and enrich heavy metal ions in wastewater, which provides a new way to effectively solve the problem of treating wastewater that contains heavy metal ions.