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Electrochemical denitrificacion with chlorides using DSA and BDD anodes

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dc.contributor.author Lacasa Fernández, Engracia
dc.contributor.author Llanos López, Javier
dc.contributor.author Cañizares Cañizares, Pablo
dc.contributor.author Rodrigo Rodrigo, Manuel Andrés
dc.date.accessioned 2016-06-08T08:05:01Z
dc.date.available 2016-06-08T08:05:01Z
dc.date.issued 2012-03
dc.identifier.citation Chemical Engineering Journal. Volume 184, 1 March 2012, Pages 66–71 es_ES
dc.identifier.issn 1385-8947
dc.identifier.uri http://hdl.handle.net/10578/9574
dc.description.abstract In this work, the electrochemical denitrification of solutions containing chlorides is studied with two different types of anode materials: O2-dimensionally stable anodes (DSA) and boron doped diamond (BDD). First of all, a higher rate of nitrate removal was found when chloride is used as the supporting media, with respect to sulphate. Moreover, it was found that it is necessary a minimum chloride concentration to get an effective treatment and that gaseous-nitrogen is the primary nitrogen species found in the electrolyses. In this process, nitrate is firstly reduced on the cathode surface and next oxidized by the species generated by the anode material. Thus, anode material does not influence on the denitrificacion rate, but it significantly influences on the speciation of chlorine. Furthermore, formation of perchlorates advice against the use of BDD electrochemical denitrification for the production of drinking water. Finally, formation of chlorates in the DSA-electrolyses, due to the ageing of hypochlorite, also limits its use in the production of drinking water, although it does not exclude its use in other applications such as reuse of treated wastewater and treatment of industrial wastes es_ES
dc.format application/pdf es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Nitrates es_ES
dc.subject Breakpoint chlorination es_ES
dc.subject Electrolyses es_ES
dc.subject Dimensionally stable anodes es_ES
dc.subject Boron doped diamond anodes es_ES
dc.title Electrochemical denitrificacion with chlorides using DSA and BDD anodes es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.identifier.DOI 10.1016/j.cej.2011.12.090


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