Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater

This study evaluates the energetic aspects and competitiveness of Proton Exchange Membrane (PEM) technology for the electrochemical generation of ozone gas, used as a disinfectant for pretreating hospital wastewater to reduce bacterial load. The findings indicate that higher current densities favor...

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Autores: Correia Alonso, Sergio Enmanuel, Lacasa Fernández, Engracia, Cañizares Cañizares, Pablo, Rodrigo Rodrigo, Manuel Andrés, Sáez Jiménez, Cristina
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/47753
Acceso en línea:https://doi.org/10.1016/j.psep.2025.107639
https://hdl.handle.net/10578/47753
Access Level:acceso abierto
Palabra clave:Antibiotic-resistant bacteria
Disinfection
PEM cell
Ozone
Hospital wastewater
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spelling Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewaterCorreia Alonso, Sergio EnmanuelLacasa Fernández, EngraciaCañizares Cañizares, PabloRodrigo Rodrigo, Manuel AndrésSáez Jiménez, CristinaAntibiotic-resistant bacteriaDisinfectionPEM cellOzoneHospital wastewaterThis study evaluates the energetic aspects and competitiveness of Proton Exchange Membrane (PEM) technology for the electrochemical generation of ozone gas, used as a disinfectant for pretreating hospital wastewater to reduce bacterial load. The findings indicate that higher current densities favor the efficiency of ozone production over oxygen evolution, with energy consumption values ranging from 0.38 to 0.86 kWh per gram of O3 at current densities of 75 and 25 mA cm⁻², respectively. PEM technology demonstrates high effectiveness and competitiveness in reducing bacterial load in hospital effluents compared to other Advanced Oxidation Processes (AOPs). The use of a jet aerator significantly enhances process efficiency, achieving up to a tenfold increase compared to non-aerated conditions, and with energy consumption values of 2.37 and 1.16 kWh per cubic meter per order at suction flow rates of 0.1 and 0.4 L min⁻¹ , respectively. In continuous operation mode, the flow rate of treated urine impacts the inactivation of K. pneumoniae, with disinfection rates exceeding 99.99 % achieved at flow rates below 0.250 L h⁻¹ and ratios of g O₃ per g DOC above 0.05. These findings underscore the potential of PEM technology as an efficient and competitive method for hospital wastewater disinfection.Elsevier202620262025info:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.1016/j.psep.2025.107639https://hdl.handle.net/10578/47753reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSBPLY/21/180501/000035PRE2020-094608info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/477532026-05-27T07:36:41Z
dc.title.none.fl_str_mv Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
title Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
spellingShingle Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
Correia Alonso, Sergio Enmanuel
Antibiotic-resistant bacteria
Disinfection
PEM cell
Ozone
Hospital wastewater
title_short Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
title_full Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
title_fullStr Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
title_full_unstemmed Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
title_sort Energy-efficient electro-ozonizers: A solution for antibiotic-resistant bacteria (ARB) in wastewater
dc.creator.none.fl_str_mv Correia Alonso, Sergio Enmanuel
Lacasa Fernández, Engracia
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
Sáez Jiménez, Cristina
author Correia Alonso, Sergio Enmanuel
author_facet Correia Alonso, Sergio Enmanuel
Lacasa Fernández, Engracia
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
Sáez Jiménez, Cristina
author_role author
author2 Lacasa Fernández, Engracia
Cañizares Cañizares, Pablo
Rodrigo Rodrigo, Manuel Andrés
Sáez Jiménez, Cristina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Antibiotic-resistant bacteria
Disinfection
PEM cell
Ozone
Hospital wastewater
topic Antibiotic-resistant bacteria
Disinfection
PEM cell
Ozone
Hospital wastewater
description This study evaluates the energetic aspects and competitiveness of Proton Exchange Membrane (PEM) technology for the electrochemical generation of ozone gas, used as a disinfectant for pretreating hospital wastewater to reduce bacterial load. The findings indicate that higher current densities favor the efficiency of ozone production over oxygen evolution, with energy consumption values ranging from 0.38 to 0.86 kWh per gram of O3 at current densities of 75 and 25 mA cm⁻², respectively. PEM technology demonstrates high effectiveness and competitiveness in reducing bacterial load in hospital effluents compared to other Advanced Oxidation Processes (AOPs). The use of a jet aerator significantly enhances process efficiency, achieving up to a tenfold increase compared to non-aerated conditions, and with energy consumption values of 2.37 and 1.16 kWh per cubic meter per order at suction flow rates of 0.1 and 0.4 L min⁻¹ , respectively. In continuous operation mode, the flow rate of treated urine impacts the inactivation of K. pneumoniae, with disinfection rates exceeding 99.99 % achieved at flow rates below 0.250 L h⁻¹ and ratios of g O₃ per g DOC above 0.05. These findings underscore the potential of PEM technology as an efficient and competitive method for hospital wastewater disinfection.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
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.psep.2025.107639
https://hdl.handle.net/10578/47753
url https://doi.org/10.1016/j.psep.2025.107639
https://hdl.handle.net/10578/47753
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv SBPLY/21/180501/000035
PRE2020-094608
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 15.81155

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