Selective removal of heavy metal ions by disulfide linked polymer networks

JOURNAL OF HAZARDOUS MATERIALS

卷:332

Article

Ko, Dongah¹  Lee, Joo Sung²  Patel, Hasmukh A.³  Jakobsen, Mogens H.⁴  Hwang, Yuhoon⁵  Yavuz, Cafer T.²  Hansen, Hans Chr. Bruun⁶  Andersen, Henrik R.¹ 

[1] Tech Univ Denmark, Dept Environm Engn, Miljovej 113, DK-2800 Lyngby, Denmark

[2] Korea Adv Inst Sci & Technol, Grad Sch EEWS, Daejeon 34141, South Korea

[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[4] Tech Univ Denmark, Dept Micro & Nano Technol, Orsteds Plods 345B, DK-2800 Lyngby, Denmark

[5] Seoul Natl Univ Sci & Technol, Dept Environm Engn, 232 Gongreung Ro, Seoul 01811, South Korea

[6] Univ Copenhagen, Dept Plant & Environm Sci, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark

关键词: Sulfur functionality;    Polymer network;    Heavy metals ion removal;    Wastewater treatment;    Selective removal;   

DOI  :  10.1016/j.jhazmat.2017.03.007

来源: Elsevier

【 摘 要 】

Heavy metal contaminated surface water is one of the oldest pollution problems, which is critical to ecosystems and human health. We devised disulfide linked polymer networks and employed as a sorbent for removing heavy metal ions from contaminated water. Although the polymer network material has a moderate surface area, it demonstrated cadmium removal efficiency equivalent to highly porous activated carbon while it showed 16 times faster sorption kinetics compared to activated carbon, owing to the high affinity of cadmium towards disulfide and thiol functionality in the polymer network. The metal sorption mechanism on polymer network was studied by sorption kinetics, effect of pH, and metal complexation. We observed that the metal ions-copper, cadmium, and zinc showed high binding affinity in polymer network, even in the presence of competing cations like calcium in water. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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