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AuthorBensalah, Nasr
AuthorDbira, Sondos
AuthorBedoui, Ahmed
Available date2023-07-16T08:23:46Z
Publication Date2015-09-13
Publication NameJournal of Environmental Sciences (China)
Identifierhttp://dx.doi.org/10.1016/j.jes.2015.10.015
CitationBensalah, N., Dbira, S., & Bedoui, A. (2016). The contribution of mediated oxidation mechanisms in the electrolytic degradation of cyanuric acid using diamond anodes. Journal of Environmental Sciences, 45, 115-123.
ISSN1001-0742
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84957639523&origin=inward
URIhttp://hdl.handle.net/10576/45647
AbstractIn this work, the contribution of mediated oxidation mechanisms in the electrolytic degradation of cyanuric acid using boron-doped diamond (BDD) anodes was investigated in different electrolytes. A complete mineralization of cyanuric acid was obtained in NaCl; however lower degrees of mineralization of 70% and 40% were obtained in Na2SO4 and NaClO4, respectively. This can be explained by the nature of the oxidants electrogenerated in each electrolyte. It is clear that the contribution of active chlorine (Cl2, HClO, ClO−) electrogenerated from oxidation of chlorides on BDD is much more important in the electrolytic degradation of cyanuric acid than the persulfate and hydroxyl radicals produced by electro-oxidation of sulfate and water on BDD anodes. This could be explained by the high affinity of active chlorine towards nitrogen compounds. No organic intermediates were detected during the electrolytic degradation of cyanuric acid in any the electrolytes, which can be explained by their immediate depletion by hydroxyl radicals produced on the BDD surface. Nitrates and ammonium were the final products of electrolytic degradation of cyanuric acid on BDD anodes in all electrolytes. In addition, small amounts of chloramines were formed in the chloride medium. Low current density (≤ 10 mA/cm2) and neutral medium (pH in the range 6–9) should be used for high efficiency electrolytic degradation and negligible formation of hazardous chlorate and perchlorate.
Languageen
PublisherIOS Press
SubjectCyanuric acid
Diamond anode
Electrolytic degradation
Mediated oxidation
Supporting electrolyte
TitleThe contribution of mediated oxidation mechanisms in the electrolytic degradation of cyanuric acid using diamond anodes
TypeArticle
Pagination115-123
Volume Number45
ESSN1878-7320
dc.accessType Abstract Only


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