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Enhanced ozonation of antibiotics using magnetic Mg(OH)(2) nanoparticles made through magnesium recovery from discarded bischofite

文献类型：期刊论文

作者Lu, J; Sun, Q; Wu, J; Zhu, GC
刊名CHEMOSPHERE
出版日期2020-01
卷号238页码:UNSP 124694
关键词Fe3O4@Mg(OH)(2) magnetic nanoparticles Water treatment Antibiotics Catalytic ozonation Core-shell structure Antibacterial activity
ISSN号0045-6535
DOI10.1016/j.chemosphere.2019.124694
产权排序[Lu, Jian ; Sun, Qi] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China ; [Wu, Jun] YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China ; [Wu, Jun] Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Shandong, Peoples R China ; [Zhu, Guangcan] Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China
文献子类Article
英文摘要Techniques for reutilization of the discarded bischofite are limited while efficient recovery of the Mg(OH)(2) nanoparticles from water during the synthesis and reuse processes is a challenge. In this study, the Fe3O4@Mg(OH)(2) core-shell magnetic nanoparticles were firstly prepared from discarded bischofite and used as catalyst for improving the ozonation of metronidazole (MNZ). The removal rate constant of MNZ increased by 694.7% using Fe3O4@Mg(OH)(2). Compared with the Mg(OH)(2) control, the MNZ removal rate constant of Fe3O4@Mg(OH)(2) treatment was almost tripled. The persistent high catalytic activity of the Fe3O4@Mg(OH)(2) catalyst was observed since the MNZ removal rate constant decreased by just 13.2% in the third reuse run. The Fe3O4@Mg(OH)(2) primarily enhanced ozone decomposition through producing hydroxyl radicals. The MNZ removal rate constant increased from 0.075 min(-1) to 0.643 min(-1) as catalyst dose increased from 0 to 0.6 g L-1 while it decreased by 96.0% when its initial concentration increased from 10 to 200 mg L-1. The maximum removal rate constant was observed at 25 degrees C when temperature increased from 15 degrees C to 35 degrees C. The Cl-, HCO3-, SO42-, Ca2+, Mg2+ ions could jeopardize MNZ degradation. The antibacterial activity of MNZ was eliminated after catalytic ozonation while the mineralization efficiency was almost doubled. The nitro group reduction and the cleavage of hydroxyethyl bond were two main transformation pathways of MNZ. These findings suggest that Fe3O4@Mg(OH)(2) nanoparticle made from discarded bischofite is the promising catalyst for the ozonation of antibiotics in the terms of water purification practice and reutilization of the bischofite. (C) 2019 Elsevier Ltd. All rights reserved.
WOS关键词PETROCHEMICAL WASTE-WATER ; CATALYTIC OZONATION ; NITROIMIDAZOLE ANTIBIOTICS ; DRINKING-WATER ; DEGRADATION ; REMOVAL ; METRONIDAZOLE ; ACID ; NANOTUBES ; HYDROXIDE
WOS研究方向Environmental Sciences
语种英语
WOS记录号WOS:000497885800137
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41877131] ; Taishan Scholar Program of Shandong Province [tsqn201812116] ; One Hundred Talents Program of Chinese Academy of SciencesChinese Academy of Sciences [Y629041021] ; Two-Hundred Talents Plan of Yantai [Y739011021]
源URL[http://ir.yic.ac.cn/handle/133337/24784]  
专题烟台海岸带研究所_近岸生态与环境实验室
烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
作者单位1.Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China
2.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Shandong, Peoples R China;
3.YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China;
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China;
推荐引用方式
GB/T 7714		 Lu, J,Sun, Q,Wu, J,et al. Enhanced ozonation of antibiotics using magnetic Mg(OH)(2) nanoparticles made through magnesium recovery from discarded bischofite[J]. CHEMOSPHERE,2020,238:UNSP 124694.
APA Lu, J,Sun, Q,Wu, J,&Zhu, GC.(2020).Enhanced ozonation of antibiotics using magnetic Mg(OH)(2) nanoparticles made through magnesium recovery from discarded bischofite.CHEMOSPHERE,238,UNSP 124694.
MLA Lu, J,et al."Enhanced ozonation of antibiotics using magnetic Mg(OH)(2) nanoparticles made through magnesium recovery from discarded bischofite".CHEMOSPHERE 238(2020):UNSP 124694.

入库方式： OAI收割

来源：烟台海岸带研究所

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