Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 91, Issue -, Pages 443-449Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2016.05.103
Keywords
Cr(VI); Chitosan; Hydrothermal carbonization
Funding
- National Natural Science Foundation of China (NSFC) [21577073]
- Science and Technology Innovation Program
- Elite Youth program of Chinese Academy of Agricultural Sciences
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A carbonaceous adsorbent for effectively removing Cr(VI) was synthesized by facile hydrothermal carbonization of chitosan (HTC-chitosan). The prepared HTC-chitosan exhibited good stability in acid solution while the amine groups were retained completely after simple and green hydrothermal carbonization treatment. Structure characteristics of the HTC-chitosan as well as its adsorption behaviors for Cr(VI) in aqueous solution were investigated. Under optimal conditions, the adsorption capacity of the HTC-chitosan for Cr(VI) reached as high as 388.60 mg g(-1), which was much higher than that of other materials reported previously. The prepared HTC-chitosan adsorbent could be reused at least five times with adsorption efficiency more than 92%. These results indicate that HTC-chitosan exhibited great superiority for Cr(VI) adsoption from aqueous solution both in terms of the preparation process and adsorption performance. (C) 2016 Elsevier B.V. All rights reserved.
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