Degradation mechanism of norfloxacin in wastewater by Fe3O4 nanoparticles activated persulfates
SU Bing-qin1,2, LIU Yi-qing1,2, LIN Yu-ting1, SONG Xiu-lan1,2, LI Rui1, RUI Chuang-xue3
1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030600, China; 2. Graduate Education Innovation Center of Shanxi Institute of Municipal Engineering, Taiyuan 030600, China; 3. Shanxi Jiabaoyuan Technology Co., Ltd., Taiyuan 030006, China
Abstract: The advanced oxidation process employing Fe3O4 nanoparticles activated peroxymonosulfate (Fe3O4/PMS) is used to degrade norfloxacin (NOR) in wastewater.The effects of Fe3O4 dosage,PMS concentration,and initial pH value on the degradation of norfloxacin are investigated.The recyclability of Fe3O4 catalyst are also explored.It is found that the degradation rate of norfloxacin reaches 96.6% with an apparent rate constant (Kobs) of 0.030 3 min-1 when the initial concentration of norfloxacin is 5.0 mg·L-1,Fe3O4 dosage is 2.0 g·L-1,PMS concentration is 0.8 mmol·L-1,pH value is 7.0,reaction temperature is 30℃ and the reaction has performed for 2 hours.The degradation reaction kinetics of norfloxacin follows the first-order reaction.EPR experiments confirm that SO-4· is dominant in the degradation of norfloxacin.The degradation pathways and mechanism of norfloxacin are inferred through LC-MS.
苏冰琴, 刘一清, 林昱廷, 宋秀兰, 李瑞, 芮创学. 纳米Fe3O4活化过硫酸盐降解废水中诺氟沙星的研究[J]. 现代化工, 2022, 42(9): 97-101,108.
SU Bing-qin, LIU Yi-qing, LIN Yu-ting, SONG Xiu-lan, LI Rui, RUI Chuang-xue. Degradation mechanism of norfloxacin in wastewater by Fe3O4 nanoparticles activated persulfates. Modern Chemical Industry, 2022, 42(9): 97-101,108.
[1] Asif Abdul Hannan,Wang Shaobin,Hongqi Sun.Hematite-based nanomaterials for photocatalytic degradation of pharmaceuticals and personal care products (PPCPs):A short review[J].Current Opinion in Green and Sustainable Chemistry,2021,28:100447. [2] 王柯阳,丁家琪,李子跃,等.铁酸铋催化类芬顿及光芬顿体系降解诺氟沙星[J].中国给水排水,2019,35(9):48-52. [3] 魏红,史京转,李佳霖,等.超声、过硫酸钾协同去除水中诺氟沙星的效果[J].环境科学,2015,36(11):4121-4126. [4] Deng Y,Ezyske C M.Sulfate radical-advanced oxidation process (SR-AOP) for simultaneous removal of refractory organic contaminants and ammonia in landfill leachate[J].Water Research,2011,45(18):6189-6194. [5] 黄智辉,纪志永,陈希,等.过硫酸盐高级氧化降解水体中有机污染物研究进展[J].化工进展,2019,38(5):402-411. [6] 赵玉珏,刘芝宏,周爱娟,等.响应面法优化Fe2+活化过硫酸盐降解喹啉工艺研究[J].现代化工,2021,41(1):143-148. [7] 李立,吴丽颖,董正玉,等.高晶度Mn-Fe LDH催化剂活化过一硫酸盐降解偶氮染料RBK5[J].环境科学,2020,41(6):2736-2745. [8] Moussav G,Momeninejad H,Shekoohiyan S,et al.Oxidation of acetaminophen in the contaminated water using UVC/S2O2-8 process in a cylindrical photoreactor:Efficiency and kinetics of degradation and mineralization[J].Separation & Purification Technology,2017,181:132-138. [9] Antoniou M G,De La Cruz A A,Dionysiou D D.Degradation of microcystin-LR using sulfate radicals generated through photolysis,thermolysis and e-transfer mechanisms[J].Applied Catalysis B:Environmental,2010,96(3-4):290-298. [10] 苏冰琴,林昱廷,宋秀兰,等.磁性纳米Fe3O4活化过一硫酸盐降解水中三氯生[J].中国给水排水,2021,37(15):89-94,101. [11] Song Xiulan,Ren Caiwen,Zhao Qingyun.Simultaneous removal of Cr(Ⅵ) and triclosan from aqueous solutions through Fe3O4 magnetic nanoscale-activated persulfate oxidation[J].Chemical Engineering Journal,2020,381:122586. [12] 董正玉,吴丽颖,王霁,等.新型Fe3O4@α-MnO2活化过一硫酸盐降解水中偶氮染料[J].中国环境科学,2018,38(8):3003-3010. [13] 苏冰琴,刘一清,林昱廷,等.Fe3O4活化过硫酸盐体系同步去除诺氟沙星和铅[J].中国环境科学,2022,42(2):717-727. [14] 佘月城,董正玉,吴丽颖,等.MnFe2O4活化过一硫酸盐降解废水中LAS[J].中国环境科学,2019,39(8):3323-3331. [15] 刘洪位,郭洪光,付垚,等.硫酸根自由基降解诺氟沙星动力学因子优化分析[J].水处理技术,2016,42(3):27-31,42. [16] Wang Y,Sun H,Ang M,et al.3D-hierarchically structured MnO2 for catalytic oxidation of phenol solutions by activation of peroxymonosulfate:Structure dependence and mechanism[J].Applied Catalysis B Environment,2015,164:159-167. [17] Peng Qian,Ding Yaobin,Zhu Lihua,et al.Fast and complete degradation of norfloxacin by using Fe/Fe3C@NG as a bifunctional catalyst for activating peroxymonosulfate[J].Separation & Purification Technology,2018,202:307-317.