New heterocycle modified chitosan adsorbent for metal ions (II) removal from aqueous systems

被引：39
|
作者：
Kandile, Nadia G. [1 ]
Mohamed, Hemat M. [1 ]
Mohamed, Mansoura I. [1 ]
机构：
[1] Ain Shams Univ, Fac Women, Dept Chem, Cairo 11757, Egypt
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2015年 / 72卷
关键词：
Modified chitosan; Hydrogel; Heterocycle; Metal uptake; Swelling; HEAVY-METALS; ADSORPTION; BIOSORPTION; HYDROGELS; BEHAVIOR; BINDING; BIOMASS; NICKEL; COPPER; MEDIA;
D O I：
10.1016/j.ijbiomac.2014.07.042
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：
A new hydrogel based on a modified chitosan CS-B was synthesized and evaluated for its metal ion removal from aqueous systems. The CS-B hydrogel was prepared through modification of chitosan with 4((1, 3-dioxoisoindolin-2-ylimino) methyl) benzaldehyde as a heterocyclic component. The new hydrogel was analyzed by diverse techniques such as FTIR, XRD, TGA, SEM, and swelling tests. The adsorption capacity of CS-B for metal ions Co2+, Hg2+, Cu2+, Zn2+, and Pb2+ from aqueous systems at different pH values showed various levels of efficiency. The metal ion uptake data over a range of pH values for Co2+ and Hg2+ showed the highest adsorption capacity while Cu2+, Zn2+, and Pb2+ showed moderate adsorption capacity. Selective metal ion efficiency was highest for Co2+ and lowest for Hg2+ in their binary mixture. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：110 / 116
页数：7
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