Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay

doi:10.1061/(ASCE)EE.1943-7870.0001550

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	Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay
	Zhou, SW ; He, JZ ; Bi, XL
刊名	JOURNAL OF ENVIRONMENTAL ENGINEERING
	2019-09-01
卷号	145 期号:9 页码:4019053
关键词	Dichlorophenol (DCP) Fenton-like reaction Fe-Cu-pillared clay (Fe-Cu-PILC) Sodium chloride (NaCl) Induction time (TI) Hydroxyl radical (center dot OH)
ISSN号	0733-9372
DOI	10.1061/(ASCE)EE.1943-7870.0001550
产权排序	[Zhou, Shiwei] Ludong Univ, Sch Agr, Yantai 264025, Shandong, Peoples R China ; [He, Jingzhe] Tsinghua Agr Co Ltd, Beijing 100084, Peoples R China ; [Bi, Xiaoli] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Informat Integrat & Management, Yantai 264003, Shandong, Peoples R China
文献子类	Article
英文摘要	Catalytic wet peroxide oxidation (CWPO) of dichlorophenols (DCPs) over Fe-Cu-pillared clay (PILC) without and with NaCl was investigated. Concentration change dynamics in H2O2, Cl-, and hydroxyl radicals (center dot OH) during DCP oxidation were also studied. Additionally, the intermediates formed were detected by liquid chromatography-mass spectroscopy (LC-MS). The results showed that the presence of NaCl inhibited the DCP oxidation rate to some extent, where induction time (TI) was lengthened from 75.9 to 93.6 min, and half-decomposition time (T1/2) was extended to 20.6 min (from 86.6 to 107.2 min) as compared with control (without NaCl addition). However, NaCl only strongly inhibited the oxidation rate of ortho-substituted DCPs such as 2,6-DCP, where TI was lengthened to 80 min (from 290.7 to 370.4 min), but not meta-DCPs or para-DCPs. Further investigation showed that NaCl did not affect the conversion (dechlorination and hydroxylation) of DCPs and also did not change the DCP oxidation path. It was hypothesized that the inhibitory mechanism of NaCl on ortho-DCP oxidation was mainly due to inhibiting the rate-limiting step of H2O2 decomposition (lengthening the induction period from 350 to 510 min) by competing with H2O2 for the complexation of Fe (III), secondary due to scavenging of center dot OH (about 21%) to form chlorine radicals such as center dot Cl2-. (c) 2019 American Society of Civil Engineers.
WOS关键词	WET PEROXIDE OXIDATION ; HYDROXYL RADICAL GENERATION ; HYDROGEN-PEROXIDE ; CHLORIDE-IONS ; PHOTOCATALYTIC DEGRADATION ; CATALYTIC DEGRADATION ; CHLORINATED PHENOLS ; ORGANIC POLLUTANTS ; FENTON OXIDATION ; FERMIS EQUATION
WOS研究方向	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
语种	英语
WOS记录号	WOS:000475465400006
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41271254]
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24876]
专题	烟台海岸带研究所_海岸带信息集成与综合管理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.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Informat Integrat & Management, Yantai 264003, Shandong, Peoples R China 2.Tsinghua Agr Co Ltd, Beijing 100084, Peoples R China; 3.Ludong Univ, Sch Agr, Yantai 264025, Shandong, Peoples R China;
推荐引用方式 GB/T 7714	Zhou, SW,He, JZ,Bi, XL. Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay[J]. JOURNAL OF ENVIRONMENTAL ENGINEERING,2019,145(9):4019053.
APA	Zhou, SW,He, JZ,&Bi, XL.(2019).Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay.JOURNAL OF ENVIRONMENTAL ENGINEERING,145(9),4019053.
MLA	Zhou, SW,et al."Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay".JOURNAL OF ENVIRONMENTAL ENGINEERING 145.9(2019):4019053.