Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 112, Issue -, Pages 728-736Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2018.01.206
Keywords
Cellulose nanofibers; Cysteine; Thiol groups; Adsorption; Mercuric ions
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Presence of mercury ions in water, even in trace amounts, is a serious environmental hazard. Hence, there is imperative need to develop innovative and environmentally-friendly materials for their removal from wastewaters. In the present study, cellulose nanofibers (CNFs) extracted from bagasse was esterified with L-cysteine to yield thiol and amine functionalized green material (Cys-CNFs) for removal of Hg2+ ions. The Cys-CNFs were well characterized by SEM, TEM, FTIR, EDS and XRD and evaluated for selective removal of Hg2+ ions from the simulated wastewater. It was observed that Cys-CNFs adsorb Hg2+ ions even at a very low concentration of 1.0 mg/L and it exhibited a maximum adsorption capacity of 116.822 mg g(-1). Kinetic analysis of the data revealed that pseudo-second order kinetics and Langmuir isotherm were followed for adsorption of He2+ ions. (C) 2018 Elsevier B.V. All rights reserved.
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