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dc.contributor.authorHan, Yanhe
dc.contributor.authorQi, Mengmeng
dc.contributor.authorZhang, Lei
dc.contributor.authorSang, Yimin
dc.contributor.authorLiu, Meili
dc.contributor.authorZhao, Tingting
dc.contributor.authorNiu, Junfeng
dc.contributor.authorZhang, Shanqing
dc.date.accessioned2019-08-30T00:41:14Z
dc.date.available2019-08-30T00:41:14Z
dc.date.issued2019
dc.identifier.issn0304-3894
dc.identifier.doi10.1016/j.jhazmat.2018.11.036
dc.identifier.urihttp://hdl.handle.net/10072/386814
dc.description.abstractThe degradation of nitrobenzene by synchronistic oxidation and reduction was investigated using an internal circulation microelectrolysis (ICE) reactor with an active volume of 0.018 m 3 . Compared with a conventional fixed bed reactor with and without aeration, the ICE reactor exhibited a markedly higher nitrobenzene degradation efficiency. The effects of various operational parameters such as reaction time, aeration rate, initial nitrobenzene concentration, initial pH, and a volume ratio of iron and carbon (Fe/C) were also investigated. The optimal operating conditions (reaction time = 60 min, aeration rate = 5 × 10 −4 m 3 /s, initial concentration of nitrobenzene = 300 mg/L, pH = 3.0, Fe/C = 1:1) gave removal efficiencies of nitrobenzene and chemical oxygen demand of 98.2% and 58%, respectively. The biodegradability index of the treated nitrobenzene solution was 0.45, which is 22 times that of the original solution. The reaction intermediates were identified through high-performance liquid chromatography, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry, and ion chromatography. The primary intermediates were determined to be aniline, phenol, and carboxylic acids, indicating that nitrobenzene was synchronously oxidized and reduced in the ICE reactor. Based on the identified intermediates, a possible pathway for nitrobenzene degradation in the ICE reactor is proposed.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom448
dc.relation.ispartofpageto456
dc.relation.ispartofjournalJournal of Hazardous Materials
dc.relation.ispartofvolume365
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode34
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode40
dc.subject.keywordsScience & Technology
dc.subject.keywordsTechnology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsEngineering, Environmental
dc.subject.keywordsEnvironmental Sciences
dc.titleDegradation of nitrobenzene by synchronistic oxidation and reduction in an internal circulation microelectrolysis reactor
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationHan, Y; Qi, M; Zhang, L; Sang, Y; Liu, M; Zhao, T; Niu, J; Zhang, S, Degradation of nitrobenzene by synchronistic oxidation and reduction in an internal circulation microelectrolysis reactor, Journal of Hazardous Materials, 2019, 365, pp. 448-456
dcterms.dateAccepted2018-11-09
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2019-08-30T00:33:17Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2019 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorZhang, Shanqing


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