Author Identifier
Rossen Sedev
https://orcid.org/0000-0002-2941-5731
Hamed Akhondzadeh
https://orcid.org/0000-0002-1056-258X
Mujahid Ali
https://orcid.org/0000-0002-9305-9188
Alireza Keshavarz
https://orcid.org/0000-0002-8091-961X
Stefan Iglauer
Document Type
Journal Article
Publication Title
Geophysical Research Letters
Publisher
Wiley
School
School of Engineering / Centre for Sustainable Energy and Resources
RAS ID
52695
Funders
Australian Research Council's Discovery Projects funding scheme. Grant Number: DP220102907
Grant Number
ARC Number : DP220102907
Abstract
Hydrogen storage is a main issue in the establishment of a hydrogen economy. Geo-storage could be a viable solution if hydrogen could be injected into and withdrawn from suitable geological formations, reversibly and reliably. Rock wettability is a major factor as it affects injectivities, withdrawal rates, storage capacities, and containment security. We report here the contact angles of a brine on the surface of a bituminous coal in a pressurized hydrogen atmosphere. Under realistic geo-storage conditions the coal surface was weakly water-wet. Hydrogen pressure increased brine contact angles at 25°C but did not have an impact at 50 or 70°C. We present a thermodynamic model that describes the observed behavior. Our results would support the development of large-scale geo-storage technologies for hydrogen.
DOI
10.1029/2022GL098261
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Sedev, R., Akhondzadeh, H., Ali, M., Keshavarz, A., & Iglauer, S. (2022). Contact Angles of a Brine on a Bituminous Coal in Compressed Hydrogen. Geophysical Research Letters, 49(8), p. 1-6, e2022GL098261. https://doi.org/10.1029/2022GL098261