L-Cysteine functionalized bagasse cellulose nanofibers for mercury(II) ions adsorption

被引：78

作者：

Bansal, Monica ^{[1
]}

Ram, Bhagat ^{[1
]}

Chauhan, Ghanshyam S. ^{[1
]}

Kaushik, Anupama ^{[2
]}

机构：

[1] Himachal Pradesh Univ, Dept Chem, Summer Hill, Shimla 171005, India

[2] Panjab Univ, Dr SSB UICET, Chandigarh 160014, India

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2018年 / 112卷

关键词：

Cellulose nanofibers; Cysteine; Thiol groups; Adsorption; Mercuric ions; HEAVY-METAL IONS; AQUEOUS-SOLUTION; CARBON NANOTUBES; WHEAT-STRAW; SELECTIVE SORBENT; ACTIVATED CARBON; REMOVAL; NANOPARTICLES; ADSORBENT; WATER;

D O I：

10.1016/j.ijbiomac.2018.01.206

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页码：728 / 736

页数：9

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