Disinfection of urine by conductive-diamond 1 electrochemical oxidation

This work focuses on the application of electrolysis with diamond anodes for the disinfection of urine. To do this, a synthetic human urine was polluted with Escherichia coli and Pseudomonas aeruginosa and then, it was electrolyzed at current densities within the range 0–100 A m−2. Results show that...

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Detalles Bibliográficos
Autores: Cotillas, Salvador, Lacasa Fernández, Engracia, Sáez Jiménez, Cristina, Cañizares Cañizares, Pablo, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/17551
Acceso en línea:http://hdl.handle.net/10578/17551
Access Level:acceso abierto
Palabra clave:disinfection
electrolysis
E. coli
P. aeruginosa
diamond
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spelling Disinfection of urine by conductive-diamond 1 electrochemical oxidationCotillas, SalvadorLacasa Fernández, EngraciaSáez Jiménez, CristinaCañizares Cañizares, PabloRodrigo Rodrigo, Manuel AndrésdisinfectionelectrolysisE. coliP. aeruginosadiamondThis work focuses on the application of electrolysis with diamond anodes for the disinfection of urine. To do this, a synthetic human urine was polluted with Escherichia coli and Pseudomonas aeruginosa and then, it was electrolyzed at current densities within the range 0–100 A m−2. Results show that it is possible to disinfect completely the effluent even at applied electric charges lower than 2 kAh m−3, regardless the current density applied. This good performance is related to the production of powerful oxidants from the oxidation of the ions present in synthetic urine. Likewise, these species also react with the organics contained in urine (urea, creatinine and uric acid), favoring their degradation. The process efficiency for both microorganisms and organics is higher when working at low current densities. The removal of organics leads to the release of significant amounts of nitrogen in the form of nitrate which are later electroreduced to ammonium, that, in turn, reacts with the electrogenerated hypochlorite, favoring the production of chloramines (which can also contribute to the disinfection process). Regarding the mineralization, TOC removal higher than 90% can be achieved but higher applied electric charges than those required for disinfection have to be applied (around 30 kAh m−3).Elsevier201820182018info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/17551reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/175512026-05-27T07:36:41Z
dc.title.none.fl_str_mv Disinfection of urine by conductive-diamond 1 electrochemical oxidation
title Disinfection of urine by conductive-diamond 1 electrochemical oxidation
spellingShingle Disinfection of urine by conductive-diamond 1 electrochemical oxidation
Cotillas, Salvador
disinfection
electrolysis
E. coli
P. aeruginosa
diamond
title_short Disinfection of urine by conductive-diamond 1 electrochemical oxidation
title_full Disinfection of urine by conductive-diamond 1 electrochemical oxidation
title_fullStr Disinfection of urine by conductive-diamond 1 electrochemical oxidation
title_full_unstemmed Disinfection of urine by conductive-diamond 1 electrochemical oxidation
title_sort Disinfection of urine by conductive-diamond 1 electrochemical oxidation
dc.creator.none.fl_str_mv Cotillas, Salvador
Lacasa Fernández, Engracia
Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author Cotillas, Salvador
author_facet Cotillas, Salvador
Lacasa Fernández, Engracia
Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Lacasa Fernández, Engracia
Sáez Jiménez, Cristina
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv disinfection
electrolysis
E. coli
P. aeruginosa
diamond
topic disinfection
electrolysis
E. coli
P. aeruginosa
diamond
description This work focuses on the application of electrolysis with diamond anodes for the disinfection of urine. To do this, a synthetic human urine was polluted with Escherichia coli and Pseudomonas aeruginosa and then, it was electrolyzed at current densities within the range 0–100 A m−2. Results show that it is possible to disinfect completely the effluent even at applied electric charges lower than 2 kAh m−3, regardless the current density applied. This good performance is related to the production of powerful oxidants from the oxidation of the ions present in synthetic urine. Likewise, these species also react with the organics contained in urine (urea, creatinine and uric acid), favoring their degradation. The process efficiency for both microorganisms and organics is higher when working at low current densities. The removal of organics leads to the release of significant amounts of nitrogen in the form of nitrate which are later electroreduced to ammonium, that, in turn, reacts with the electrogenerated hypochlorite, favoring the production of chloramines (which can also contribute to the disinfection process). Regarding the mineralization, TOC removal higher than 90% can be achieved but higher applied electric charges than those required for disinfection have to be applied (around 30 kAh m−3).
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10578/17551
url http://hdl.handle.net/10578/17551
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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