Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals

doi:10.1021/acs.est.0c00356

	Cobalt/Peracetic Acid: Advanced Oxidation of Aromatic Organic Compounds by Acetylperoxyl Radicals
	Kim, Juhee 2; Du, Penghui 1; Liu, Wen 3; Luo, Cong 2; Zhao, He 1; Huang, Ching-Hua 2
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2020-04-21
卷号	54 期号:8 页码:5268-5278
ISSN号	0013-936X
DOI	10.1021/acs.est.0c00356
英文摘要	Peracetic 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.
资助项目	National Science Foundation[CHE-1609361]
WOS关键词	WASTE-WATER DISINFECTION ; PERACETIC-ACID ; RATE CONSTANTS ; HYDROXYL RADICALS ; PHENOL DEGRADATION ; HYDROGEN-PEROXIDE ; UV/PERACETIC ACID ; QSAR MODELS ; CONTAMINANTS ; SULFATE
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000527738300060
资助机构	National Science Foundation
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40292]
专题	中国科学院过程工程研究所
通讯作者	Huang, Ching-Hua
作者单位	1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA 3.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China
推荐引用方式 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.