This study addresses the microbial risks associated with Underground Hydrogen Storage (UHS), a critical component in the transition towards renewable energy systems, by employing an innovative multi-reactor system (Bio-xplorer) to simulate UHS conditions in two Italian reservoirs. The microbiological risk assessment (MRA) of Reservoir A and B was evaluated by subjecting them to gas mixtures of 10 % H2 and 90 % CH4, and 99 % H2 and 1 % CO2, respectively. In Reservoir A, the stability of pressure and temperature, the negligible optical density, and lack of microbial metabolites suggested a low risk of microbial activation. Molecular analyses confirmed the absence of sulphate- reducing bacteria (SRB) and limited growth of hydrogenotrophic methanogens (HM). Similarly, in Reservoir B, the absence of SRB and limited occurrence of HM indicated a low microbiological risk. Overall, the present work supports the safe and efficient implementation of UHS, a promising mitigation technique for climate change, using an innovative tool for MRA.
“Innovative high pressure/high temperature, multi-sensing bioreactors system for microbial risk assessment in underground hydrogen storage” / Vasile, Nicolò Santi; Bellini, Ruggero; Bassani, Ilaria; Vizzarro, Arianna; Abdel Azim, Annalisa; Coti, Christian; Barbieri, Donatella; Scapolo, Matteo; Viberti, Dario; Verga, Francesca; Pirri, Fabrizio; Menin, Barbara. - In: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY. - ISSN 0360-3199. - 51:(2024), pp. 41-50. [10.1016/j.ijhydene.2023.10.245]
“Innovative high pressure/high temperature, multi-sensing bioreactors system for microbial risk assessment in underground hydrogen storage”
Vasile, Nicolò Santi;Vizzarro, Arianna;Abdel Azim, Annalisa;Viberti, Dario;Verga, Francesca;Pirri, Fabrizio;Menin, Barbara
2024
Abstract
This study addresses the microbial risks associated with Underground Hydrogen Storage (UHS), a critical component in the transition towards renewable energy systems, by employing an innovative multi-reactor system (Bio-xplorer) to simulate UHS conditions in two Italian reservoirs. The microbiological risk assessment (MRA) of Reservoir A and B was evaluated by subjecting them to gas mixtures of 10 % H2 and 90 % CH4, and 99 % H2 and 1 % CO2, respectively. In Reservoir A, the stability of pressure and temperature, the negligible optical density, and lack of microbial metabolites suggested a low risk of microbial activation. Molecular analyses confirmed the absence of sulphate- reducing bacteria (SRB) and limited growth of hydrogenotrophic methanogens (HM). Similarly, in Reservoir B, the absence of SRB and limited occurrence of HM indicated a low microbiological risk. Overall, the present work supports the safe and efficient implementation of UHS, a promising mitigation technique for climate change, using an innovative tool for MRA.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2983952