| Literature DB >> 30027376 |
Hao Wu1, Meng-Dan Ma1, Wei-Zhuo Gai2, Hongxun Yang3, Jian-Ge Zhou4, Zhenxiang Cheng5, Pingguang Xu6, Zhen-Yan Deng7,8.
Abstract
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.Entities:
Keywords: Aqueous solution; Arsenic removal; Hydrothermal method; Iron; MIL-88A; Microrod
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Year: 2018 PMID: 30027376 DOI: 10.1007/s11356-018-2751-2
Source DB: PubMed Journal: Environ Sci Pollut Res Int ISSN: 0944-1344 Impact factor: 4.223