Arsenic removal from water by metal-organic framework MIL-88A microrods

被引：72
|
作者：
Wu, Hao [1 ]
Ma, Meng-Dan [1 ]
Gai, Wei-Zhuo [2 ]
Yang, Hongxun [3 ]
Zhou, Jian-Ge [4 ]
Cheng, Zhenxiang [5 ]
Xu, Pingguang [6 ]
Deng, Zhen-Yan [1 ,7 ]
机构：
[1] Shanghai Univ, Coll Sci, Dept Phys, Energy Mat & Phys Grp, Shanghai 200444, Peoples R China
[2] Luoyang Normal Univ, Sch Phys & Elect Informat, Luoyang 471934, Peoples R China
[3] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[4] Jackson State Univ, Dept Phys Atmospher Sci & Geosci, Jackson, MS 39217 USA
[5] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2500, Australia
[6] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan
[7] Shanghai Key Lab High Temp Superconductors, 99 Shangda Rd, Shanghai 200444, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 27期
关键词：
Arsenic removal; Aqueous solution; MIL-88A; Iron; Microrod; Hydrothermal method; SELECTIVE ADSORPTION; DRINKING-WATER; ADSORBENTS; STORAGE;
D O I：
10.1007/s11356-018-2751-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Fe-based metal-organic framework MIL-88A microrods were synthesized by hydrothermal method, which were used to adsorb As(V) in water for the first time. The experimental results indicated that MIL-88A has a very fast adsorption rate towards arsenic in water. The kinetic and isothermal data for arsenic removal were better fitted to the pseudo-second-order kinetic model and Langmuir model, respectively, implying a chemical and monolayer adsorption for As(V) on MIL-88A microrods. Two rate-controlling processes during adsorption were revealed by the intraparticle diffusion model. The maximum adsorption capacity of MIL-88A reached 145 mg g(-1), higher than those of Fe-based MIL adsorbents reported previously, which probably originates from its unique microstructure with abundant OH- groups and an unusual large swelling towards water. These show that Fe-based MIL-88A is a good candidate for arsenic removal.
引用
收藏
页码：27196 / 27202
页数：7
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