Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions
Concerning the emerging power-to-gas technologies, which are considered the most promising technology for seasonal renewable energy storage, Underground Hydrogen Storage (UHS) has gained attention in the last few years. For safe and efficient storage, possible hydrogen losses due to dissolution into...
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Frontiers Media S.A.
2024-04-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1356491/full |
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| author | Michel Tawil Eloisa Salina Borello Sergio Bocchini Candido Fabrizio Pirri Candido Fabrizio Pirri Francesca Verga Christian Coti Matteo Scapolo Donatella Barbieri Dario Viberti |
| author_facet | Michel Tawil Eloisa Salina Borello Sergio Bocchini Candido Fabrizio Pirri Candido Fabrizio Pirri Francesca Verga Christian Coti Matteo Scapolo Donatella Barbieri Dario Viberti |
| author_sort | Michel Tawil |
| collection | DOAJ |
| description | Concerning the emerging power-to-gas technologies, which are considered the most promising technology for seasonal renewable energy storage, Underground Hydrogen Storage (UHS) has gained attention in the last few years. For safe and efficient storage, possible hydrogen losses due to dissolution into the aquifer must be estimated accurately. Due to safety concerns, experimental measurements of hydrogen solubility in brine at reservoir conditions are limited. In this study, a PVT cell is used to characterize the solubility of hydrogen and its mixtures with methane in saline water/brine. The experiments were carried out at 45, 50, and 55°C and from 1 bar up to 500 bar, mimicking a significant range of possible reservoir conditions. Two brine samples representative of two different reservoirs were tested. Two mixtures of methane and hydrogen (10 mol% H2 and 50 mol% H2, respectively) were considered, along with pure hydrogen, to account for the presence of methane in the primary phase of hydrogen storage in a depleted gas reservoir. In the current paper, a comparison of the experimental results with literature models is provided. At the experiment conditions, the impact of the differences in the composition of the two analyzed brines as well as the impact of the analyzed range of temperatures was not significant. Conversely, a non-negligible variation in terms of the slope of the solubility curve was observed as a function of the gas mixture composition: the curve increased more steeply as the percentage of hydrogen reduced. |
| first_indexed | 2024-04-24T06:56:31Z |
| format | Article |
| id | doaj.art-776ecdb56466433697a2f125dd026c59 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-24T06:56:31Z |
| publishDate | 2024-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-776ecdb56466433697a2f125dd026c592024-04-22T10:56:19ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2024-04-011210.3389/fenrg.2024.13564911356491Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditionsMichel Tawil0Eloisa Salina Borello1Sergio Bocchini2Candido Fabrizio Pirri3Candido Fabrizio Pirri4Francesca Verga5Christian Coti6Matteo Scapolo7Donatella Barbieri8Dario Viberti9Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalyDepartment of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalyDepartment of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalyDepartment of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalyCenter for Sustainable Future Technologies, Fondazione Istituto Italiano di Tecnologia, Torino, ItalyDepartment of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalySnam-Stogit, Crema, ItalySnam-Stogit, Crema, ItalySnam-Stogit, Crema, ItalyDepartment of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Torino, ItalyConcerning the emerging power-to-gas technologies, which are considered the most promising technology for seasonal renewable energy storage, Underground Hydrogen Storage (UHS) has gained attention in the last few years. For safe and efficient storage, possible hydrogen losses due to dissolution into the aquifer must be estimated accurately. Due to safety concerns, experimental measurements of hydrogen solubility in brine at reservoir conditions are limited. In this study, a PVT cell is used to characterize the solubility of hydrogen and its mixtures with methane in saline water/brine. The experiments were carried out at 45, 50, and 55°C and from 1 bar up to 500 bar, mimicking a significant range of possible reservoir conditions. Two brine samples representative of two different reservoirs were tested. Two mixtures of methane and hydrogen (10 mol% H2 and 50 mol% H2, respectively) were considered, along with pure hydrogen, to account for the presence of methane in the primary phase of hydrogen storage in a depleted gas reservoir. In the current paper, a comparison of the experimental results with literature models is provided. At the experiment conditions, the impact of the differences in the composition of the two analyzed brines as well as the impact of the analyzed range of temperatures was not significant. Conversely, a non-negligible variation in terms of the slope of the solubility curve was observed as a function of the gas mixture composition: the curve increased more steeply as the percentage of hydrogen reduced.https://www.frontiersin.org/articles/10.3389/fenrg.2024.1356491/fullhydrogen storagesolubilityH2-CH4 mixturesPVT cellbrinegas storage |
| spellingShingle | Michel Tawil Eloisa Salina Borello Sergio Bocchini Candido Fabrizio Pirri Candido Fabrizio Pirri Francesca Verga Christian Coti Matteo Scapolo Donatella Barbieri Dario Viberti Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions Frontiers in Energy Research hydrogen storage solubility H2-CH4 mixtures PVT cell brine gas storage |
| title | Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| title_full | Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| title_fullStr | Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| title_full_unstemmed | Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| title_short | Solubility of H2-CH4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| title_sort | solubility of h2 ch4 mixtures in brine at underground hydrogen storage thermodynamic conditions |
| topic | hydrogen storage solubility H2-CH4 mixtures PVT cell brine gas storage |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1356491/full |
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