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Efficient degradation of lomefloxacin by Co-Cu-LDH activating peroxymonosulfate process: Optimization, dynamics, degradation pathway and mechanism
Guo, Ruonan1; Zhu, Yiliang3; Cheng, XW(程修文)1; Li, Junjing2; Crittenden, John C.4,5
2020-11-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume399
AbstractIn this study, bimetal layered double hydroxides (CoxCuy-LDHs) containing a carbonate interlayer were synthesized using coprecipitation with a variety of Co/Cu mole ratios. Meanwhile, the corresponding layered double oxides (CoxCuy-LDOs) were prepared as controls. In this study, Electrical energy per order was performed to evaluate economic analysis. Correspondingly, we found that CoxCuy-LDHs possessed a significantly better PMS activation capability than the corresponding metal oxide composite (Co3O4/CuO). Compared with other Co(x)Cu(y)LDHs, Co2Cu1 LDH possessed the best PMS activation capability for LOM degradation and the lowest electrical energy per order (EE/O) value during the reaction. Additionally, Co2Cu1 LDH presented an excellent stability and worked over a wide pH range. The hydroxide states of Co(III), Co(II), Cu(I) and Cu(II) were all able to activate PMS, indicating that there were many active sites on the surface of Co2Cu1 LDH. The involvement of radicals in this reaction system was determined via scavenger experiments and electron paramagnetic resonance (EPR). Meanwhile, it's worth noting that a mathematical model was developed to quantify the involvement of SO4 center dot- and center dot OH. Subsequently, we determined PMS activation mechanism and LOM decomposition pathway for the PMS/Co2Cu1 LDH system.
KeywordLayered double hydroxides Peroxymonosulfate Lomefloxacin Advance oxidation Reactive species inducing route Degradation pathway
DOI10.1016/j.jhazmat.2020.122966
Indexed BySCIE ; EI
Language英语
Funding ProjectNational Natural Science Foundation of China[51978319][51508254]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000569378300007
PublisherELSEVIER
EI Accession Number20202308792887
EI KeywordsCobalt compounds
EI Classification Number549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 701.2 Magnetism: Basic Concepts and Phenomena ; 801 Chemistry ; 804 Chemical Products Generally ; 911.2 Industrial Economics
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/440969
Collection资源环境学院
Corresponding AuthorCheng, Xiuwen; Li, Junjing
Affiliation1.Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Environm Pollut Predict & Control, Key Lab Western Chinas Environm Syst,Minist Educ, Tianshui South Rd 222, Lanzhou 730000, Gansu, Peoples R China
2.Tiangong Univ, Sch Environm Sci & Engn, State Key Lab Separat Membranes & Membrane Proc, Binshui West Rd 399, Tianjin 300387, Peoples R China
3.Lanzhou Jiaotong Univ, Sch Automat & Elect Engn, Lanzhou 730070, Peoples R China
4.Georgia Inst Technol, Brook Byers Inst Sustainable Syst, 828 West Peachtree St, Atlanta, GA 30332 USA
5.Georgia Inst Technol, Sch Civil & Environm Engn, 828 West Peachtree St, Atlanta, GA 30332 USA
First Author AffilicationCollege of Earth Environmental Sciences
Corresponding Author AffilicationCollege of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Guo, Ruonan,Zhu, Yiliang,Cheng, Xiuwen,et al. Efficient degradation of lomefloxacin by Co-Cu-LDH activating peroxymonosulfate process: Optimization, dynamics, degradation pathway and mechanism[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,399.
APA Guo, Ruonan,Zhu, Yiliang,Cheng, Xiuwen,Li, Junjing,&Crittenden, John C..(2020).Efficient degradation of lomefloxacin by Co-Cu-LDH activating peroxymonosulfate process: Optimization, dynamics, degradation pathway and mechanism.JOURNAL OF HAZARDOUS MATERIALS,399.
MLA Guo, Ruonan,et al."Efficient degradation of lomefloxacin by Co-Cu-LDH activating peroxymonosulfate process: Optimization, dynamics, degradation pathway and mechanism".JOURNAL OF HAZARDOUS MATERIALS 399(2020).
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