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Synthesis and adsorption properties of macroporous cross‐linked polystyrene that contains an immobilizing 2,5‐dimercapto‐1,3,4‐thiodiazole with tetraethylene glycol spacers
Author(s) -
Qu Rongjun,
Sun Changmei,
Chunnuan JI,
Wang Chunhua,
Zhao Zhenguo,
Yu Desheng,
Qu Rongjun,
Sun Changmei
Publication year - 2005
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20431
Subject(s) - adsorption , polystyrene , fourier transform infrared spectroscopy , materials science , freundlich equation , langmuir , metal ions in aqueous solution , desorption , isothermal process , metal , chelating resin , nuclear chemistry , chemical engineering , polymer chemistry , chemistry , composite material , polymer , metallurgy , thermodynamics , physics , engineering
A novel chelating resin macroporous cross‐linked polystyrene immobilizing 2,5‐dimercapto‐1,3,4‐thiodiazole via a hydrophilic tetraethylene glycol spacer (PS‐TEG‐BMT) is synthesized and the structure is characterized by means of Fourier transform infrared spectroscopy (FTIR), energy dispersive X‐ray microanalysis (EDX), and elementary analysis. Its adsorption capacity for several metal ions such as Hg 2+ , Ag + , Ni 2+ , Pb 2+ , Cd 2+ , Fe 3+ , Bi 3+ , Zn 2+ , and Cu 2+ are investigated. The initial experimental result shows that this resin has higher adsorption selectivity for Hg 2+ and Ni 2+ than for the other metal ions and the introduction of hydrophilic TEG spacer is beneficial to increase adsorption capacities. The result also shows that the Langmuir model is better than the Freundlich model to describe the isothermal process of PS‐TEG‐BME resin for Hg 2+ . Five adsorption‐desorption cycles demonstrate that this resin are suitable for reuse without considerable change in adsorption capacity. POLYM. ENG. SCI., 45:1515–1521, 2005. © 2005 Society of Plastics Engineers