RT info:eu-repo/semantics/article
T1 Long-term open circuit microbial electrosynthesis system promotes methanogenesis
A1 Mateos González, Raúl
A1 Escapa González, Adrián
A1 San Martin Bécares, María Isabel
A1 De Wever, Heleen
A1 Sotres, Ana
A1 Pant, Deepak
A2 Ingenieria Quimica
K1 Ingeniería química
K1 Biocathode
K1 Electromethanogenesis
K1 Microbial electrosynthesis
K1 Microbial community dynamics
K1 Methanogens
K1 Acetogens
K1 2302.20 Química Microbiológica
AB [EN] Microbial electrosynthesis (MES) can potentially provide a mean for storing renewable energy surpluses as chemical energy. However, the fluctuating nature of these energy sources may represent a threat to MES, as the microbial communities that develop on the biocathode rely on the continuous existence of a polarized electrode. This work assesses how MES performance, product generation and microbial community evolution are affected by a long-period (6 weeks) power off (open circuit). Acetogenic and H2-producing bacteria activity recovered after reconnection. However, few days later syntrophic acetate oxidation bacteria and H2-consuming methanogens became dominant, producing CH4 as the main product, via electromethanogenesis and the syntrophic interaction between eubacterial and archaeal communities which consume both the acetic acid and the hydrogen present in the cathode environment. Thus, the system proved to be resilient to a long-term power interruption in terms of electroactivity. At the same time, these results demonstrated that the system could be extensively affected in both end product generation and microbial communities.
PB Elsevier
SN 2095-4956
LK https://hdl.handle.net/10612/18112
UL https://hdl.handle.net/10612/18112
NO Mateos, R., Escapa, A., San-Martín, M. I., De Wever, H., Sotres, A., & Pant, D. (2020). Long-term open circuit microbial electrosynthesis system promotes methanogenesis. Journal of Energy Chemistry, 41, 3-6. https://doi.org/10.1016/J.JECHEM.2019.04.020
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 20-may-2024