Design, Operation, Modeling and Grid Integration of Power-to-Gas Bioelectrochemical Systems

Raúl Santiago Muñoz-Aguilar, Daniele Molognoni, Pau Bosch-Jimenez, Eduard Borràs, Mónica Della Pirriera and Álvaro Luna
Additional contact information
Raúl Santiago Muñoz-Aguilar: Department of Electrical Engineering, Technical University of Catalonia, 08222 Terrassa, Spain
Daniele Molognoni: Leitat Technological Center, 08225 Terrassa, Spain
Pau Bosch-Jimenez: Leitat Technological Center, 08225 Terrassa, Spain
Eduard Borràs: Leitat Technological Center, 08225 Terrassa, Spain
Mónica Della Pirriera: Leitat Technological Center, 08225 Terrassa, Spain
Álvaro Luna: Department of Electrical Engineering, Technical University of Catalonia, 08222 Terrassa, Spain

Energies, 2018, vol. 11, issue 8, 1-15

Abstract: This paper deals with the design, operation, modeling, and grid integration of bioelectrochemical systems (BES) for power-to-gas application, through an electromethanogenesis process. The paper objective is to show that BES-based power-to-gas energy storage is feasible on a large scale, showing a first approximation that goes from the BES design and operation to the electrical grid integration. It is the first study attempting to cover all aspects of a BES-based power-to-gas technology, on authors’ knowledge. Designed BES reactors were based on a modular architecture, suitable for a future scaling-up. They were operated in steady state for eight months, and continuously monitored in terms of power consumption, water treatment, and biomethane production, in order to obtain data for the following modeling activity. A black box linear model of the BES was computed by using least-square methods, and validated through comparison with collected experimental data. Afterwards, a BES stack was simulated through several series and parallel connections of reactors, in order to obtain higher power consumption and test the grid integration of a real application system. The renewable energy surplus and energy price variability were evaluated for the grid integration of the BES stack. The BES stack was then simulated as energy storage system during low energy price periods, and tested experimentally with a real time system.

Keywords: electromethanogenesis; methanation; microbial electrosynthesis; power to gas; system modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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