Nanoscaled magnetic CuFe2O4 as an activator of peroxymonosulfate for the degradation of antibiotics norfloxacin

doi:10.1016/j.seppur.2018.11.051

	Nanoscaled magnetic CuFe2O4 as an activator of peroxymonosulfate for the degradation of antibiotics norfloxacin
	Wang, Yuru 1; Tian, Dongfan 1,2; Chu, Wei 3; Li, Minrui 1; Lu, Xinwei 1
	2019-04-01
发表期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
卷号	212 页码:536-544
通讯作者	Wang, Yuru([email protected]) ; Lu, Xinwei([email protected])
摘要	In this study, a magnetically separable nanoscale CuFe2O4 synthesized by co-precipitation-calcination method was employed as a heterogeneous catalyst to activate peroxymonosulfate (PMS) for the generation of powerful oxidizing sulfate radical (SO4 center dot-). The degradation of the fluoroquinolone antibiotics norfloxacin (NOR) in aqueous solution by CuFe2O4/PMS system was examined. The effect of experimental parameters, including initial pH, oxidant and NOR concentrations, catalyst dose, and water matrices on NOR removal was systematically investigated. The evolution of inorganic ions (e.g., NO3-, F-, and NH4+) and low molecular weight organic acids (e.g., formic acid, lactic acid, acetic acid, and oxalic acid) during NOR degradation was monitored by using ion chromatography. Experimental results showed that NOR degradation was in accordance with the pseudo first-order reaction kinetics. At pH = 7, more than 90% of 25 mu M NOR was removed in 120 min by using 200 mg L-1 CuFe2O4 to activate 0.5 mM PMS. Free radical quenching experiments revealed the dominant role of SO4 center dot- in oxidizing NOR in CuFe2O4/PMS system. TOC test indicated that > 64% of initial carbon content was removed in 12 h; meanwhile an increasing buildup of carboxylic acids was observed and contributed to 32.9% of initial carbon content in 12h, suggesting that they were the predominant end products before completely mineralization. The XRD profile of the catalyst before and after the reaction was characterized. It was found that the structure and properties of the catalyst kept stable, and the recovered catalyst exhibited good performance during the reusability test. The result therefore suggested that CuFe2O4/PMS is a promising alternative as a possible application for treatment of water polluted by norfloxacin antibiotics.
关键词	Peroxymonosulfate Sulfate radical CuFe2O4 Antibiotics Norfloxacin
DOI	10.1016/j.seppur.2018.11.051
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51508317]###2419; Fundamental Research Funds for the Central Universities[GK201802108]###2420; China Postdoctoral Science Foundation[2016M602762]###2421; Special Financial Grant from the Shaanxi Postdoctoral Science Foundation[2017BSHTDZZ09]###2422; National Natural Science Foundation of China[51508317]; Fundamental Research Funds for the Central Universities[GK201802108]; China Postdoctoral Science Foundation[2016M602762]; Special Financial Grant from the Shaanxi Postdoctoral Science Foundation[2017BSHTDZZ09]
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000457814700060
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：156[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/160814
专题	海洋生态与环境科学重点实验室
通讯作者	Wang, Yuru; Lu, Xinwei
作者单位	1.Shaanxi Normal Univ, Sch Geog & Tourism, Dept Environm Sci, Xian 710119, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong 999077, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yuru,Tian, Dongfan,Chu, Wei,et al. Nanoscaled magnetic CuFe2O4 as an activator of peroxymonosulfate for the degradation of antibiotics norfloxacin[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2019,212:536-544.
APA	Wang, Yuru,Tian, Dongfan,Chu, Wei,Li, Minrui,&Lu, Xinwei.(2019).Nanoscaled magnetic CuFe2O4 as an activator of peroxymonosulfate for the degradation of antibiotics norfloxacin.SEPARATION AND PURIFICATION TECHNOLOGY,212,536-544.
MLA	Wang, Yuru,et al."Nanoscaled magnetic CuFe2O4 as an activator of peroxymonosulfate for the degradation of antibiotics norfloxacin".SEPARATION AND PURIFICATION TECHNOLOGY 212(2019):536-544.

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