CAS OpenIR
Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals
Kim, Juhee1; Du, Penghui2; Liu, Wen3; Luo, Cong1; Zhao, He2; Huang, Ching-Hua1
2020-04-21
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:8Pages:5268-5278
AbstractPeracetic acid (PAA) is increasingly used as an alternative disinfectant and its advanced oxidation processes (AOPs) could be useful for pollutant degradation. Co(II) or Co(III) can activate PAA to produce acetyloxyl (CH3C(O)O-center dot) and acetylperoxyl (CH3C(O)O-center dot) radicals with little (OH)-O-center dot radical formation, and Co(II)/Co(III) is cycled. For the first time, this study determined the reaction rates of PAA with Co(II) (k(PAA, Co(II)) = 1.70 x 10(1) to 6.67 x 10(2) M-1.s(-1)) and Co(III) (k(PAA, Co(III)) = 3.91 x 10(0) to 4.57 x 10(2) M-1.s(-1)) ions over the initial pH 3.0-8.2 and evaluated 30 different aromatic organic compounds for degradation by Co/PAA. In-depth investigation confirmed that CH3C(O)O-center dot is the key reactive species under Co/PAA for compound degradation. Assessing the structure-activity relationship between compounds' molecular descriptors and pseudo-first-order degradation rate constants (k(PAA)'. in s(-1)) by Co/PAA showed the number of ring atoms, E-HOMO, softness, and ionization potential to be the most influential, strongly suggesting the electron transfer mechanism from aromatic compounds to the acetylperoxyl radical. The radical production and compound degradation in Co/PAA are most efficient in the intermediate pH range and can be influenced by water matrix constituents of bicarbonate, phosphate, and humic acids. These results significantly improve the knowledge regarding the acetylperoxyl radical from PAA and will be useful for further development and applications of PAA-based AOPs.
DOI10.1021/acs.est.0c00356
Language英语
WOS KeywordWASTE-WATER DISINFECTION ; PERACETIC-ACID ; RATE CONSTANTS ; HYDROXYL RADICALS ; PHENOL DEGRADATION ; HYDROGEN-PEROXIDE ; UV/PERACETIC ACID ; QSAR MODELS ; CONTAMINANTS ; SULFATE
Funding ProjectNational Science Foundation[CHE-1609361]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Science Foundation
WOS IDWOS:000527738300060
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40293
Collection中国科学院过程工程研究所
Corresponding AuthorHuang, Ching-Hua
Affiliation1.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA
2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Kim, Juhee,Du, Penghui,Liu, Wen,et al. Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(8):5268-5278.
APA Kim, Juhee,Du, Penghui,Liu, Wen,Luo, Cong,Zhao, He,&Huang, Ching-Hua.(2020).Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(8),5268-5278.
MLA Kim, Juhee,et al."Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.8(2020):5268-5278.
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