Journal
CHINESE CHEMICAL LETTERS
Volume 28, Issue 3, Pages 625-632Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2016.11.015
Keywords
Biomass; Carboxymethyl chitosan; Hemicellulose; Heavy metal ions; Adsorbent
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Funding
- National Natural Science Foundation of China [21403091]
- Natural Science Foundation of Jiangsu Province, China [BK20130486]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601066B]
- Jiangsu University for Senior Intellectuals [14JDG128, 12JDG093]
- Jiangsu Province [Surencaiban[2015]26]
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Carboxymethyl chitosan-hemicellulose resin (CMCH) was synthesized by thermal cross-linking process and characterized by FTIR, TGA, and SEM. Subsequently, the adsorption properties of CMCH toward Ni(II), Cd(II), Cu(II), Hg(II), Mn(VII) and Cr(VI) were evaluated. Various factors affecting the uptake behavior such as pH, temperature, contact time and the initial concentration of the metal ions were investigated. The results showed that all adsorption processes fit the pseudo-second-order model and Langmuir isotherm equation. Significantly, the regeneration experiments showed CMCH can be used as a potentially recyclable and effective adsorbent for the removal and recovery of metal ions from wastewater. (C) 2016 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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