Zhou, SW; He, JZ; Bi, XL
发表期刊JOURNAL OF ENVIRONMENTAL ENGINEERING
ISSN0733-9372
2019-09-01
卷号145期号:9页码:4019053
关键词Dichlorophenol (DCP)Fenton-like reactionFe-Cu-pillared clay (Fe-Cu-PILC)Sodium chloride (NaCl)Induction time (TI)Hydroxyl radical (center dot OH)
研究领域Engineering, Environmental; Engineering, Civil; Environmental Sciences
DOI10.1061/(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
作者部门海岸带信息集成与综合管理实验室
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.
文章类型Article
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41271254]
收录类别SCI
语种英语
关键词[WOS]WET PEROXIDE OXIDATION; HYDROXYL RADICAL GENERATION; HYDROGEN-PEROXIDE; CHLORIDE-IONS; PHOTOCATALYTIC DEGRADATION; CATALYTIC DEGRADATION; CHLORINATED PHENOLS; ORGANIC POLLUTANTS; FENTON OXIDATION; FERMIS EQUATION
研究领域[WOS]Engineering, Environmental; Engineering, Civil; Environmental Sciences
WOS记录号WOS:000475465400006
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/24876
专题中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
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.Ludong Univ, Sch Agr, Yantai 264025, Shandong, Peoples R China;
2.Tsinghua Agr Co Ltd, Beijing 100084, Peoples R China;
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Lab Coastal Informat Integrat & Management, Yantai 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714Zhou, 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.
APAZhou, 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.
MLAZhou, SW,et al."Kinetics of Inhibition of Dichlorophenol Oxidation by NaCl over Fe-Cu-Pillared Clay".JOURNAL OF ENVIRONMENTAL ENGINEERING 145.9(2019):4019053.
PDF全文下载地址:
点我下载PDF
