2024-03-29T12:11:23Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/144452022-11-22T13:13:03Zcom_10612_17col_10612_18
Escuela de Ingenierias Industrial e Informatica
Pelaz, Guillermo
Carrillo-Peña, Daniela
Morán Palao, Antonio
Escapa González, Adrián
Ingenieria Electrica
2022
2022-03-31T11:36:03Z
2022-03-31T11:36:03Z
0016-2361
https://www.sciencedirect.com/science/article/pii/S0016236121022092?via%3Dihub
http://hdl.handle.net/10612/14445
10.1016/j.fuel.2021.122336
[EN] In this study we aimed to understand the impact of medium–low temperatures on the two main steps that usually comprise the electromethanogenesis (EM) process: electrothrophic hydrogenesis and hydrogenothrophic methanogenesis. Results revealed that pure CO2 could effectively be converted into a high-purity biogas (∼90:10 CH4/CO2) at 30 °C. However, when temperature was reduced to 15 °C, methane richness greatly decreased (∼40:60 CH4/CO2). This deterioration in performance was mostly attributed to a decline in methanogenic activity (represented mainly by Methanobacterium and Methanobrevibacter). In contrast, the hydrogenic activity (mostly Desulfomicrobium) did not suffer any significant decay. Results also seemed to indicate that methanogenesis, rather than hydrogenesis, is the main source of variability in EM. Increasing the temperature again to 30 °C restored previous performance, which highlights the resilience of EM to wide temperature fluctuations (from 30 to 15 and back 30 °C).
SI
eng
Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Ingeniería química
Bioelectrochemical system
Electromethanogenesis
Low temperature
Biogas
Biocathode
3303 Ingeniería y Tecnología Químicas
3306 Ingeniería y Tecnología Eléctricas
Electromethanogenesis at medium-low temperatures: Impact on performance and sources of variability
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
LE320P18 (project co-financed by FEDER funds),EREN_2019_L3_ULE,FPU Grant (FPU17/00789)
Fuel
310
122336