Selective removal of heavy metal ions by disulfide linked polymer networks

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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.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-06
Language
English
Article Type
Article
Keywords

COVALENT ORGANIC POLYMERS; ACTIVATED CARBON; HIGHLY EFFICIENT; WASTE-WATER; CAPTURE CAPACITY; AQUEOUS-SOLUTION; VISIBLE-LIGHT; ADSORPTION; POLLUTION; FUNCTIONALIZATION

Citation

JOURNAL OF HAZARDOUS MATERIALS, v.332, pp.140 - 148

ISSN
0304-3894
DOI
10.1016/j.jhazmat.2017.03.007
URI
http://hdl.handle.net/10203/223763
Appears in Collection
EEW-Journal Papers(저널논문)
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