Room: Poster Area B
Date: Monday, 09 June 2025
Time: 17:30 - 18:30 CEST
Session code 3AV.6
Integration of flexible bioenergy: biomethane, hybrid heating and flexible gasification systems
The Influence of Operational Parameters on Biological Methanation in Trickle-bed Reactors
Short Introductive summary
In the context of a power-to-gas (PtG) system, where surplus electricity from renewable sources is converted into biomethane for energy storage, this study focuses on the ex-situ biological methanation (BM) process in trickle bed reactors (TBR). Two TBRs were tested under different pressure conditions, one at ambient pressure and the other at 4 bar, to analyze the impact of key operational parameters on BM performance. Specifically, the study examined the effects of temperature, pH, and dynamic operation. The results indicate that elevated temperatures boost methanogen enzymatic activity but decrease gas solubility, leading to lower mass transfer efficiency and a decline in overall process performance. Moreover, methanogenesis operates more efficiently in mildly alkaline conditions, emphasizing the need to maintain optimal pH levels to maximize biogas production. Finally, under dynamic conditions, the system exhibited satisfactory recovery times after standby, showcasing its adaptability for integrating fluctuating renewable energy sources.
Presenter
Stefano CARBONI
RSE, ITALY
Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited
Co-authors:
A. Rossetti, Ricerca sul sistema energetico, Milan, ITALY
S. Carboni, Ricerca sill sistema energetico, Milan, ITALY
Session reference: 3AV.6.19