Ranathunga, A orcid.org/0000-0001-8746-5326, Ranjith, PG, Perera, MSA et al. (1 more author) (2020) Suitability of Victorian brown coal for CO2 sequestration: An experimental overview on effect of moisture on CO2/CH4 exchange. In: Proceedings of the 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2019. 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (16ARC) – Proceedings, 14-18 Oct 2019, Taipei, Taiwan. AGSSEA/SEAGS
Abstract
Brown coal seams located in Victoria, Australia are possible sinks for CO2 storage. However, the higher moisture contents (55-60%) present in these coal seams may affect the CO2/CH4 exchange capacities and was investigated in this study as the main objective. A series of isothermal (400C) sorption tests were carried out on brown coal specimens for different moisture contents (dry, 20%, 40% and 60%) and both CO2 and CH4 was flooded up to 10.5 MPa. The data was then evaluated by fitting to the modified Dubinin-Radushkevich (DR) model. The CO2 and CH4 capacities of the brown coal was affected by the presence of moisture. However, both sorbates displayed some critical moisture levels and afterward, sorption capacity was not affected. The net heat of adsorption pronounced a marginal decrease on addition of moisture for both sorbates. The current findings permit further investigations on swelling effect on wet brown coal for long-term CO2 sorption capacities.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | adsorption; brown coal; carbon dioxide; enhanced methane recovery; moisture |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Mar 2024 13:51 |
Last Modified: | 27 Mar 2024 13:51 |
Published Version: | http://seags.ait.asia/16arc-proceedings/16arc-proc... |
Status: | Published |
Publisher: | AGSSEA/SEAGS |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:199820 |