NDLI: Degradation Pathway of Three Chloronitrobenzenes Isomers by Ozone in the Aqueous

Content Provider	IEEE Xplore Digital Library
Author	Jimin Shen Zhonglin Chen Xiaowei Liu Nanqi Ren
Copyright Year	2010
Abstract	The ozonation of three chloronitrobenzene isomers (p-, m-, o-chloro-nitrobenzene, CNB) were investigated. CNBs was effectively degraded by ozone but cloud not be mineralized completely. During the ozonation of CNBs process, the inorganic carbon, Cl- and NO3- increased gradually, and chloro-(-Cl) and nitro-(-NO2) group all turn to Cl- and NO3- calculated by stoichiometry. The degradation products of CNBs mainly contained phenolic and carboxylic. In the process of pCNB degradation, -Cl and -NO2 could be replaced by •OH, chlorophenol and nitrophenol were formed meanwhile. However, in the process of the degradation of oCNB and mCNB, neither nitrophenol nor chlorophenol was detected. The hydrogen on the phenyl of all these three CNBs could be replaced by •OH, thus nitrochlorophenol was produced, and ten different nitrochlorophenols were detected by GC/LC-MS. The reaction pathways of CNBs were oxidized by •OH similar to the tlectrophilic substitution reaction of aromatic ring, which -Cl and -NO2 group or -H of phenyl ring are replaced to form free radical intermediate of cyclohexadien, and they were oxidized to hydroxybenzene group which get to lose -Cl , -NO2 or -H forming phenols or polyhydroxy phenols. Then opened the ring or the phenyl directly opened to form low molecule carboxylic acid and CO2.
Starting Page	1
Ending Page	4
File Size	337519
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5517049
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Biodegradable materials Clouds Mineralization Hydrogen Production Carbon dioxide Oxidation Water pollution Water resources Thermal degradation
Content Type	Text
Resource Type	Article

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