Nanofluid-assisted enhanced sealing security for efficient geological hydrogen storage in Saudi Arabian basalt

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 97, P. 112768 - 112768

Published: July 1, 2024

The modification of hydrophobic rock surfaces to the water-wet state via nanofluid treatment has shown promise in enhancing their geological storage capabilities and efficiency carbon dioxide (CO2) hydrogen (H2) containment. Despite this, specific influence silica (SiO2) nanoparticles on interactions between H2, brine, within basaltic formations remains underexplored. present study focuses effect SiO2 wettability Saudi Arabian basalt (SAB) under downhole conditions (323 K pressures ranging from 1 20 MPa) by using tilted plate technique measure contact angles H2/brine surfaces. findings reveal that SAB's hydrophobicity intensifies presence organic acids, with significant increases both advancing (θa) receding (θr) upon exposure acid at 323 MPa. Contrastingly, application these results a marked shift towards hydrophilicity, θa θr decreasing substantially, thus indicating an optimal nanoparticle concentration (0.1 wt% SiO2) for effecting transition H2-wet states. This change aligns known pressure-dependent behavior angles. Moreover, organically-aged 0.1 nanofluids MPa enhances H2 column height significantly, −424 m 4340 m, suggesting reduced risk migration across caprock thereby structural/residual trapping containment security Arabia. article highlights crucial role improving efficacy basalt, offering new insight optimization solutions hydrogen, critical component sustainable energy future.

Language: Английский

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Study of natural zeolites for hydrogen purification: CO2 adsorption capacity and kinetic mechanism

Fuel, Journal Year: 2024, Volume and Issue: 376, P. 132732 - 132732

Published: Aug. 7, 2024

Hydrogen is considered a promising alternative fuel. However, its use requires high degree of purity achieved through purification processes. Adsorption one the most important techniques for purification. This study investigates CO₂ adsorption capacity and kinetic mechanism natural zeolite to understand carbon dioxide behavior under various operating conditions. Multicomponent breakthrough curves mixture H2/CO/CH4/CO2 were obtained at different pressures gas flow rates. Additionally, comprehensive analyses CO2 equilibrium kinetics conducted. The isotherm data fitted with model equations. Freundlich, Sips Toth models providing best fit, indicating heterogeneous nature adsorbent surfaces. was analysed using models, obtaining that process involves both physical chemical interactions. limiting step diffusion intraparticle diffusion, although sequence linear sections observed in qt vs. t1/2 plots indicates presence multiple mass transfer mechanisms, such as boundary layer.

Language: Английский

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Hydrogen adsorption kinetics in organic-Rich shale reservoir rocks for seasonal geological storage

Fuel, Journal Year: 2024, Volume and Issue: 379, P. 132964 - 132964

Published: Sept. 4, 2024

Language: Английский

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Evaluating capillary trapping in underground hydrogen storage: A pore-scale to reservoir-scale analysis

Fuel, Journal Year: 2024, Volume and Issue: 376, P. 132755 - 132755

Published: Aug. 10, 2024

Language: Английский

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Underground hydrogen storage: A recovery prediction using pore network modeling and machine learning

Fuel, Journal Year: 2023, Volume and Issue: 357, P. 130051 - 130051

Published: Oct. 10, 2023

Language: Английский

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