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Electrolysis with diamond anodes: Eventually, there are refractory species!

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dc.contributor.author Salvador Cotillas
dc.contributor.author C.Saez
dc.contributor.author Ismael F. Mena
dc.contributor.author Elena Diaz
dc.contributor.author Juan J. Rodríguez
dc.date.accessioned 2018-05-16T10:39:14Z
dc.date.available 2018-05-16T10:39:14Z
dc.date.issued 2018-03-01
dc.identifier.citation Mena, I. F., Cotillas, S., Díaz, E., Sáez, C., Rodríguez, J. J., Cañizares, P., ... & Rodrigo, M. A. (2018). Electrolysis with diamond anodes: Eventually, there are refractory species!. Chemosphere, 195, 771-776. es_ES
dc.identifier.issn 0045-6535
dc.identifier.uri http://hdl.handle.net/10578/17556
dc.description.abstract In this work, synthetic wastewater polluted with ionic liquid 1-butyl-3-methylimidazolium (Bmim) bis(trifluoromethanesulfonyl)imide (NTf2) undergoes four electrolytic treatments with diamond anodes (bare electrolysis, electrolysis enhanced with peroxosulfate promoters, irradiated with UV light and with US) and results obtained were compared with those obtained with the application of Catalytic Wet Peroxide Oxidation (CWPO). Despite its complex heterocyclic structure, Bmim+ cation is successfully depleted with the five technologies tested, being transformed into intermediates that eventually can be mineralized. Photoelectrolysis attained the lowest concentration of intermediates, while CWPO is the technology less efficient in their degradation. However, the most surprising result is that concentration of NTf2- anion does not change during the five advanced oxidation processes tested, pointing out its strong refractory character, being the first species that exhibits this character in wastewater undergoing electrolysis with diamond. This means that the hydroxyl and sulfate radicals mediated oxidation and the direct electrolysis are inefficient for breaking the C-S, C-F and S-N bounds of the NTf2- anion, which is a very interesting mechanistic information to understand the complex processes undergone in electrolysis with diamond. es_ES
dc.format application/pdf es_ES
dc.language.iso en es_ES
dc.publisher Pergamon-Elsevier Sciente LTD es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.subject Refractory es_ES
dc.subject Ionic liquid es_ES
dc.subject Bis(trifluoromethanesulfonyl)imide es_ES
dc.subject 1-butyl-3-methylimidazolium es_ES
dc.subject Electrolysis es_ES
dc.title Electrolysis with diamond anodes: Eventually, there are refractory species! es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.identifier.DOI https://doi.org/10.1016/j.chemosphere.2017.12.120

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