Simultaneous functionalization and magnetization of biochar via NH3 ambiance pyrolysis for efficient removal of Cr (Ⅵ) 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Chemosphere: Environmental toxicology and risk assessment
年/卷/期
2018 / 208 / Oct.
页码
712-721
ISSN号
0045-6535
作者单位
CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy ;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy ;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy ;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China,State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy ;CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China;
作者
Md Manik Mian;Balal Yousaf;Biao Fu;Habib Ullah;Muhammad Ubaid Ali;Mehr Ahmed Mujtaba Munir;Liu Ruijia;Guijian Liu;Qumber Abbas;
摘要
Enhancing biochar adsorption capabilities and recollection ability is essential for efficient biochar application. In this study, Nitrogen-doped magnetic biochar was prepared via one-step heating of FeCl3-laden agar biomass under NH3environment. Synthesized magnetic biochar ABF-N800shows a maximum Cr (VI) adsorption capacity up to 142.86?mg?g?1, outperforming that of magnetic biochar and many other previously reported materials. Moreover, a significant increase of magnetic properties obtained by NH3ambiance pyrolysis enables easy separation of the adsorbent from the solution after treated with Cr (VI). The physiochemical properties of composites characterized by SEM, EDS, XRD, XPS, VSM, BET surface and pore, Elemental content, and FTIR analysis. The NH3ambiance pyrolysis confirmed as an efficient process for surface modification, increased magnetic properties and activated N-functional groups. The Langmuir isotherm model and pseudo-second-order model are applicable for describing adsorption behavior. The thermodynamic study shows that the adsorption was spontaneous and endothermic. The present results warrant the application of simultaneous functionalized and magnetized biochar for Cr (VI) contaminated wastewater treatment.
机翻摘要
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关键词/主题词
N-Biochar;Ammonia modification;Magnetization;Adsorption;Chromium (VI);
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