On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton

The design of cost-effective reactors for wastewater treatment by electrochemical advanced oxidation processes is still a challenge. In this work, a novel electro-Fenton reactor concept is presented. The combination of a jet aerator and a microfluidic flow-through cell configures a reactor with low...

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Detalles Bibliográficos
Autores: Pérez Serrano, José Fernando, Llanos López, Javier, Sáez Jiménez, Cristina, López, Conrado, Cañizares Cañizares, Pablo, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29304
Acceso en línea:https://doi.org/10.1016/j.seppur.2018.04.021
http://hdl.handle.net/10578/29304
Access Level:acceso abierto
Palabra clave:Jet aerator
Microfluidic
Ohmic resistance
Flow-through
3D electrodes
Mass transport
EAOP
Electro-Fenton
Wastewater treatment
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spelling On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-FentonPérez Serrano, José FernandoLlanos López, JavierSáez Jiménez, CristinaLópez, ConradoCañizares Cañizares, PabloRodrigo Rodrigo, Manuel AndrésJet aeratorMicrofluidicOhmic resistanceFlow-through3D electrodesMass transportEAOPElectro-FentonWastewater treatmentThe design of cost-effective reactors for wastewater treatment by electrochemical advanced oxidation processes is still a challenge. In this work, a novel electro-Fenton reactor concept is presented. The combination of a jet aerator and a microfluidic flow-through cell configures a reactor with low ohmic drop, improved mass transfer which is, in addition, aerated by a compressor-free system. The production of H2O2 was assessed, obtaining an instantaneous production rate of 12.4 mg H2O2 cm−3 electrode h−1 at an instantaneous current efficiency of 98.6% with a low electrical energy consumption of 7.8 kWh kg H2O2−1 in 0.05 M Na2SO4 using a RVC with a deposition of CB/PTFE as the cathode. The performance of two mesh anodes (covered with mixed mineral oxides and boron doped diamond) and two cathodes (Duocel® RVC and Aluminium foams) was evaluated for the degradation of 0.75 dm3 with 100 mg dm−3 of clopyralid as model bio-refractory organic pollutant. The combination of BDD + CB/PTFE – Al was found to be synergistic due to the production of oxidizing radicals from water oxidation and electro-generated Fenton reagent. It was selected as the optimum configuration allowing a fast and efficient degradation of clopyralid after the application of approximately 0.44 Ah dm−3 (less than 1 h) resulting in an energy consumption of 0.02 kWh g−1 clopyralid at 20 mA cm−3 in a medium with only 7 mM Na2SO4 of supporting electrolyte.Elsevier202220222019info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.seppur.2018.04.021http://hdl.handle.net/10578/29304reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSpanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, UE)info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/293042026-05-27T07:36:41Z
dc.title.none.fl_str_mv On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
title On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
spellingShingle On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
Pérez Serrano, José Fernando
Jet aerator
Microfluidic
Ohmic resistance
Flow-through
3D electrodes
Mass transport
EAOP
Electro-Fenton
Wastewater treatment
title_short On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
title_full On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
title_fullStr On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
title_full_unstemmed On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
title_sort On the design of a jet-aerated microfluidic flow-through reactor for wastewater treatment by electro-Fenton
dc.creator.none.fl_str_mv Pérez Serrano, José Fernando
Llanos López, Javier
Sáez Jiménez, Cristina
López, Conrado
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author Pérez Serrano, José Fernando
author_facet Pérez Serrano, José Fernando
Llanos López, Javier
Sáez Jiménez, Cristina
López, Conrado
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Llanos López, Javier
Sáez Jiménez, Cristina
López, Conrado
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Jet aerator
Microfluidic
Ohmic resistance
Flow-through
3D electrodes
Mass transport
EAOP
Electro-Fenton
Wastewater treatment
topic Jet aerator
Microfluidic
Ohmic resistance
Flow-through
3D electrodes
Mass transport
EAOP
Electro-Fenton
Wastewater treatment
description The design of cost-effective reactors for wastewater treatment by electrochemical advanced oxidation processes is still a challenge. In this work, a novel electro-Fenton reactor concept is presented. The combination of a jet aerator and a microfluidic flow-through cell configures a reactor with low ohmic drop, improved mass transfer which is, in addition, aerated by a compressor-free system. The production of H2O2 was assessed, obtaining an instantaneous production rate of 12.4 mg H2O2 cm−3 electrode h−1 at an instantaneous current efficiency of 98.6% with a low electrical energy consumption of 7.8 kWh kg H2O2−1 in 0.05 M Na2SO4 using a RVC with a deposition of CB/PTFE as the cathode. The performance of two mesh anodes (covered with mixed mineral oxides and boron doped diamond) and two cathodes (Duocel® RVC and Aluminium foams) was evaluated for the degradation of 0.75 dm3 with 100 mg dm−3 of clopyralid as model bio-refractory organic pollutant. The combination of BDD + CB/PTFE – Al was found to be synergistic due to the production of oxidizing radicals from water oxidation and electro-generated Fenton reagent. It was selected as the optimum configuration allowing a fast and efficient degradation of clopyralid after the application of approximately 0.44 Ah dm−3 (less than 1 h) resulting in an energy consumption of 0.02 kWh g−1 clopyralid at 20 mA cm−3 in a medium with only 7 mM Na2SO4 of supporting electrolyte.
publishDate 2019
dc.date.none.fl_str_mv 2019
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.seppur.2018.04.021
http://hdl.handle.net/10578/29304
url https://doi.org/10.1016/j.seppur.2018.04.021
http://hdl.handle.net/10578/29304
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Spanish Ministry of Economy, Industry and Competitiveness and European Union through project CTM2016-76197-R (AEI/FEDER, UE)
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
_version_ 1869409657683968000
score 15,300719

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