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Article Dans Une Revue Sustainable Energy & Fuels Année : 2024

Development of a CO2-biomethanation reactor for producing methane from green H2

Julien Pérard
Elisabeth Darrouzet
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Résumé

"Power-to-Methane" approaches allow the storage and transport of green methane, produced from renewable energy and any CO2 source. In nature, some microorganisms, namely methanogens, can grow on CO2 and H-2 and produce pure methane via an ancestral process, the methanogenesis, under mild conditions (temperature, pressure, aqueous solvents. . .). These microorganisms are able to perform efficiently the Sabatier reaction (4H(2) + CO2 -> CH4 + 2H(2)O), using H-2 and CO2 as sole energy and carbon sources. Here, we developed a biomethanation reactor to culitvate a pure culture of Methanococcus maripaludis, a mesophilic methanogen growing rapidly at ambient temperature. A modular scalable and frugal 2 L-bubble column bioreactor was constructed to operate efficiently and autonomously for several weeks under a wide range of conditions. High H-2 conversion and methane yield higher than 90% could be reached. This high-performance, modular and robust bioreactor shows its potential for integration in outdoor systems coupling the conversion of alternative sources of green H-2 to fossil-free methane.

Dates et versions

hal-04468779 , version 1 (20-02-2024)

Identifiants

Citer

Grégory Cwicklinski, Roger Miras, Julien Pérard, Clara Rinaldi, Elisabeth Darrouzet, et al.. Development of a CO2-biomethanation reactor for producing methane from green H2. Sustainable Energy & Fuels, 2024, 8, pp.1068-1076. ⟨10.1039/d3se01550e⟩. ⟨hal-04468779⟩
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