Scale-up of a BTX electrochemically assisted reactive absorption

Electrochemical technologies have proven highly efficient in remediating polluted gas with benzene, toluene, and xylene (BTX). However, their scalability has yet to be explored to determine the best configurations to maintain optimal removals and energetic efficiencies. Here, we report a straightfor...

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Autores: Tiban Anrango, Bryan Andrés, Arias Sánchez, Andrea Nataly, Lobato Bajo, Justo, Rodrigo Rodrigo, Manuel Andrés
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:10578/42830
Acceso en línea:https://doi.org/10.1016/j.jelechem.2025.118998
https://hdl.handle.net/10578/42830
Access Level:acceso abierto
Palabra clave:BTX
Cell stacking
Electro-absorption
Gas treatment
Scaleup
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spelling Scale-up of a BTX electrochemically assisted reactive absorptionTiban Anrango, Bryan AndrésArias Sánchez, Andrea NatalyLobato Bajo, JustoRodrigo Rodrigo, Manuel AndrésBTXCell stackingElectro-absorptionGas treatmentScaleupElectrochemical technologies have proven highly efficient in remediating polluted gas with benzene, toluene, and xylene (BTX). However, their scalability has yet to be explored to determine the best configurations to maintain optimal removals and energetic efficiencies. Here, we report a straightforward scale-up of an electro-absorption process that combines the absorption of BTX in 0.05 M H2SO4 (electrolyte) and their electrochemical oxidation in the electrolyte. The electrochemical cell was upsized by stacking eight single-compartment cells, permitting the circulation of the absorbent in series. The results showed the successful removal of BTX from a synthetic gas stream, which increased at high current densities and low gas flow rates. Average removals over 60 % were achieved in the electro-absorption with 50 mA cm-2. Analysis of the contaminants in the electrolyte confirmed the absorption of BTXs and their electrochemical oxidation by mineralisation, which was enhanced at larger gas flows and current densities. Nevertheless, a comparison of equivalent scaled and baseline systems indicated an inferior current efficiency on the larger scale due to mass transfer inefficiencies, which are affected by circulating the absorbent in series. These findings suggest that the replication of single electrochemical cells (parallel) can optimise the performance of the electro-absorption degradation of BTX at larger scales.Electrochemical technologies have proven highly efficient in remediating polluted gas with benzene, toluene, and xylene (BTX). However, their scalability has yet to be explored to determine the best configurations to maintain optimal removals and energetic efficiencies. Here, we report a straightforward scale-up of an electro-absorption process that combines the absorption of BTX in 0.05 M H2SO4 (electrolyte) and their electrochemical oxidation in the electrolyte. The electrochemical cell was upsized by stacking eight single-compartment cells, permitting the circulation of the absorbent in series. The results showed the successful removal of BTX from a synthetic gas stream, which increased at high current densities and low gas flow rates. Average removals over 60 % were achieved in the electro-absorption with 50 mA cm-2. Analysis of the contaminants in the electrolyte confirmed the absorption of BTXs and their electrochemical oxidation by mineralisation, which was enhanced at larger gas flows and current densities. Nevertheless, a comparison of equivalent scaled and baseline systems indicated an inferior current efficiency on the larger scale due to mass transfer inefficiencies, which are affected by circulating the absorbent in series. These findings suggest that the replication of single electrochemical cells (parallel) can optimise the performance of the electro-absorption degradation of BTX at larger scales.ELSEVIER SCIENCE SA202520252025info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.jelechem.2025.118998https://hdl.handle.net/10578/42830reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/428302026-05-27T07:36:41Z
dc.title.none.fl_str_mv Scale-up of a BTX electrochemically assisted reactive absorption
title Scale-up of a BTX electrochemically assisted reactive absorption
spellingShingle Scale-up of a BTX electrochemically assisted reactive absorption
Tiban Anrango, Bryan Andrés
BTX
Cell stacking
Electro-absorption
Gas treatment
Scaleup
title_short Scale-up of a BTX electrochemically assisted reactive absorption
title_full Scale-up of a BTX electrochemically assisted reactive absorption
title_fullStr Scale-up of a BTX electrochemically assisted reactive absorption
title_full_unstemmed Scale-up of a BTX electrochemically assisted reactive absorption
title_sort Scale-up of a BTX electrochemically assisted reactive absorption
dc.creator.none.fl_str_mv Tiban Anrango, Bryan Andrés
Arias Sánchez, Andrea Nataly
Lobato Bajo, Justo
Rodrigo Rodrigo, Manuel Andrés
author Tiban Anrango, Bryan Andrés
author_facet Tiban Anrango, Bryan Andrés
Arias Sánchez, Andrea Nataly
Lobato Bajo, Justo
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Arias Sánchez, Andrea Nataly
Lobato Bajo, Justo
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
dc.subject.none.fl_str_mv BTX
Cell stacking
Electro-absorption
Gas treatment
Scaleup
topic BTX
Cell stacking
Electro-absorption
Gas treatment
Scaleup
description Electrochemical technologies have proven highly efficient in remediating polluted gas with benzene, toluene, and xylene (BTX). However, their scalability has yet to be explored to determine the best configurations to maintain optimal removals and energetic efficiencies. Here, we report a straightforward scale-up of an electro-absorption process that combines the absorption of BTX in 0.05 M H2SO4 (electrolyte) and their electrochemical oxidation in the electrolyte. The electrochemical cell was upsized by stacking eight single-compartment cells, permitting the circulation of the absorbent in series. The results showed the successful removal of BTX from a synthetic gas stream, which increased at high current densities and low gas flow rates. Average removals over 60 % were achieved in the electro-absorption with 50 mA cm-2. Analysis of the contaminants in the electrolyte confirmed the absorption of BTXs and their electrochemical oxidation by mineralisation, which was enhanced at larger gas flows and current densities. Nevertheless, a comparison of equivalent scaled and baseline systems indicated an inferior current efficiency on the larger scale due to mass transfer inefficiencies, which are affected by circulating the absorbent in series. These findings suggest that the replication of single electrochemical cells (parallel) can optimise the performance of the electro-absorption degradation of BTX at larger scales.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
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.jelechem.2025.118998
https://hdl.handle.net/10578/42830
url https://doi.org/10.1016/j.jelechem.2025.118998
https://hdl.handle.net/10578/42830
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 SCIENCE SA
publisher.none.fl_str_mv ELSEVIER SCIENCE SA
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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