Impact of long-term power interruptions on microbial electromethanogenesis

[EN] The integration of increased amounts of renewable energy capacity into the energy system will require an intensification of energy storage solutions such as power-to-gas (P2G). Among the later, microbial electromethanogenesis (MEM) emerges as a potential solution capable of storing excess energ...

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Autores: Pelaz Guerra, Guillermo, Mateos González, Raúl, Escapa González, Adrián
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de León
Repositorio:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/26270
Acceso en línea:https://hdl.handle.net/10612/26270
Access Level:acceso abierto
Palabra clave:Ingenierías
Electromethanogenesis
Power-to-gas
Power interruption
Methane
Biocathode
3303 Ingeniería y Tecnología Químicas
id ES_19eba9413bc310ea68f6ffcc0eecda8f
oai_identifier_str oai:buleria.unileon.es:10612/26270
network_acronym_str ES
network_name_str España
repository_id_str
spelling Impact of long-term power interruptions on microbial electromethanogenesisPelaz Guerra, GuillermoMateos González, RaúlEscapa González, AdriánIngenieríasElectromethanogenesisPower-to-gasPower interruptionMethaneBiocathode3303 Ingeniería y Tecnología Químicas[EN] The integration of increased amounts of renewable energy capacity into the energy system will require an intensification of energy storage solutions such as power-to-gas (P2G). Among the later, microbial electromethanogenesis (MEM) emerges as a potential solution capable of storing excess energy in the form of methane or hydrogen. However, MEM must be capable of adapting to the intermittent nature of renewable power, as well as to extended periods of downtime due to maintenance interruptions. While MEM have demonstrated a certain degree of resilience to outages of up to four days, it remains unclear whether it can withstand longer disconnection periods. To provide an answer to this question, this study aims at investigating the impact of prolonged power cuts (up to one month) on MEM systems. The findings demonstrated that MEM can recover after extended periods without reducing power. However, there was a discernible decline in current density (between 12 % and 14 %) and methane production (between 25 % and 41 %). The application of a second prolonged disconnection (lasting another month) demonstrated the adaptability of the microbial communities. The analysis of the microbial communities revealed that methanogenic archaea (Methanobacterium) were more affected than electroactive bacteria.SIThis work was supported by the Regional Government of Castilla y Le´on (Junta de Castilla y Le´on) and by the Spanish Ministry of Science and Innovation (MICIN) and the European Union NextGenerationEU / PRTR (H2MetAmo project - C17.I01.P01.S21)ElsevierIngenieria ElectricaEscuela de Ingenierias Industrial, Informática y Aeroespacial2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://hdl.handle.net/10612/26270reponame:BULERIA. Repositorio Institucional de la Universidad de Leóninstname:Universidad de LeónIngléshttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:buleria.unileon.es:10612/262702026-06-24T12:43:27Z
dc.title.none.fl_str_mv Impact of long-term power interruptions on microbial electromethanogenesis
title Impact of long-term power interruptions on microbial electromethanogenesis
spellingShingle Impact of long-term power interruptions on microbial electromethanogenesis
Pelaz Guerra, Guillermo
Ingenierías
Electromethanogenesis
Power-to-gas
Power interruption
Methane
Biocathode
3303 Ingeniería y Tecnología Químicas
title_short Impact of long-term power interruptions on microbial electromethanogenesis
title_full Impact of long-term power interruptions on microbial electromethanogenesis
title_fullStr Impact of long-term power interruptions on microbial electromethanogenesis
title_full_unstemmed Impact of long-term power interruptions on microbial electromethanogenesis
title_sort Impact of long-term power interruptions on microbial electromethanogenesis
dc.creator.none.fl_str_mv Pelaz Guerra, Guillermo
Mateos González, Raúl
Escapa González, Adrián
author Pelaz Guerra, Guillermo
author_facet Pelaz Guerra, Guillermo
Mateos González, Raúl
Escapa González, Adrián
author_role author
author2 Mateos González, Raúl
Escapa González, Adrián
author2_role author
author
dc.contributor.none.fl_str_mv Ingenieria Electrica
Escuela de Ingenierias Industrial, Informática y Aeroespacial
dc.subject.none.fl_str_mv Ingenierías
Electromethanogenesis
Power-to-gas
Power interruption
Methane
Biocathode
3303 Ingeniería y Tecnología Químicas
topic Ingenierías
Electromethanogenesis
Power-to-gas
Power interruption
Methane
Biocathode
3303 Ingeniería y Tecnología Químicas
description [EN] The integration of increased amounts of renewable energy capacity into the energy system will require an intensification of energy storage solutions such as power-to-gas (P2G). Among the later, microbial electromethanogenesis (MEM) emerges as a potential solution capable of storing excess energy in the form of methane or hydrogen. However, MEM must be capable of adapting to the intermittent nature of renewable power, as well as to extended periods of downtime due to maintenance interruptions. While MEM have demonstrated a certain degree of resilience to outages of up to four days, it remains unclear whether it can withstand longer disconnection periods. To provide an answer to this question, this study aims at investigating the impact of prolonged power cuts (up to one month) on MEM systems. The findings demonstrated that MEM can recover after extended periods without reducing power. However, there was a discernible decline in current density (between 12 % and 14 %) and methane production (between 25 % and 41 %). The application of a second prolonged disconnection (lasting another month) demonstrated the adaptability of the microbial communities. The analysis of the microbial communities revealed that methanogenic archaea (Methanobacterium) were more affected than electroactive bacteria.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10612/26270
url https://hdl.handle.net/10612/26270
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:BULERIA. Repositorio Institucional de la Universidad de León
instname:Universidad de León
instname_str Universidad de León
reponame_str BULERIA. Repositorio Institucional de la Universidad de León
collection BULERIA. Repositorio Institucional de la Universidad de León
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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