Magnetic chitosan composite for adsorption of cationic and anionic dyes in aqueous solution

被引：71
作者：
Cho, Dong-Wan [1 ]
Jeon, Byong-Hun [2 ]
Chon, Chul-Min [3 ]
Schwartz, Franklin W. [4 ]
Jeong, Yoojin [1 ]
Song, Hocheol [1 ]
机构：
[1] Sejong Univ, Environm & Energy Dept, Seoul 143747, South Korea
[2] Hanyang Univ, Dept Nat Resources & Environm Engn, Seoul 133791, South Korea
[3] Korea Inst Geosci & Mineral Resources, Geol Environm Div, Taejon 305350, South Korea
[4] Ohio State Univ, Sch Earth Sci, Columbia, OH 43210 USA
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 28卷
基金：
新加坡国家研究基金会;
关键词：
Methylene blue; Methyl orange; Chitosan; Clay; Magnetite; CROSS-LINKED CHITOSAN; METHYLENE-BLUE; ENHANCED ADSORPTION; CU(II) IONS; MILD-STEEL; REMOVAL; KINETICS; BIODEGRADATION; ADSORBENTS; BEHAVIOR;
D O I：
10.1016/j.jiec.2015.01.023
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A magnetic composite material composed of nano-magnetite (NMT), heulandite (HE), and cross-linked chitosan was prepared and used as an adsorbent for methylene blue (MB) and methyl orange (MO). The composite was characterized for the morphology, magnetic and surface properties. The optimal mass ratio of chitosan:HE:NMT for the best removal of both dyes was determined to be 1:1:0.33. The adsorption of MB and MO followed the pseudo-second order kinetics, and the maximum adsorption capacities were 45.1 and 149.2 mg g(-1) at pH 5.5, respectively. The adsorption of MB increased with the pH increase, while MO adsorption showed an opposite trend. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：60 / 66
页数：7
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