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Biological methanation with h2 state of the art and market opportunities

Summary

In the final stage of methanation, micro-organisms convert CO2 and H2 into methane (CH4) and water: this is biological methanation. Because of its complexity, the in-situ route still involves a number of technological hurdles. Ex-situ processes, on the other hand, have been technically mastered to date and have been implemented in a number of ways (biogas purification, power-to-gas, syngas methanation). While industrial developments are encouraging, the economic models remain uncertain.

With a view to studying the emerging potential, particularly in synergy with other renewable gas technologies (biomethane and hydrogen), the study presents the major trends in anaerobic digestion, followed by a state-of-the-art review of H2 production, storage and distribution technologies.
The core of the report is a review of the state of the art in biological methanation using H2 injection, looking at biological aspects, operating parameters and reactor types. Industrial players and their references are presented, as are the main scientific authors. This bibliographical work is supplemented by two feasibility studies: 1/ on the coupling of methanisation + methanation (150 Nm3/h of biomethane) and 2/ in the context of a power-to-gas unit (20MWe).
Finally, a study of emerging potential based on the identification of specific use cases has identified 3 priority development segments, recommendations for players in the sector and avenues for further research.

Keywords: Biométhanation, hydrogène, épuration, biométhane, biogaz, power-to-gas, Gaz Naturel de Synthèse (SNG), usage du CO2, méthanation de syngaz, réacteur biologique, Biomethane, hydrogen, biological process, methanation, power-to-gas, synthetic natural gas, Carbon capture use and storage, reactor, syngas méthanation, biogas upgrading

Publication date: October 2020

Achievement: VOLTIGITAL, IMT Atlantique, ENERKA

Reference: 19-0419/1A


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