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Investigation of adsorption properties of geological materials for CO 2 storage
Author(s) -
Tajnik Tanja,
Bogataj Lučka Kajfež,
Jurač Egon,
Lasnik Cvetka Ribarič,
Likar Jakob,
Debelak Brane
Publication year - 2012
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.2901
Subject(s) - siltstone , adsorption , marl , gravimetric analysis , mineralogy , geology , clay minerals , coal , metamorphic rock , biogeosciences , geochemistry , chemical engineering , petroleum engineering , chemistry , organic chemistry , geomorphology , facies , structural basin , engineering , earth science
SUMMARY The assessment for realistic CO 2 ‐adsorption capacities of different rocks is important for understanding the processes associated with CO 2 storage. This paper investigates the adsorption characteristics of rocks for CO 2 (limestone, sandstone, marl, claystone, clay, siltstone and metamorphic rock) by using a gravimetric method. The measurements were performed at 21°C with pressures from 1 up to 4 MPa. Sandstone (and clay with sand/sandstone) showed the largest adsorption capacity at 21°C. The highest amount of in situ CO 2 contents in measured samples was 21.4 kg/t. The CO 2 ‐adsorption capacities were lower than past results in different coal samples. The results indicate that adsorption of CO 2 into rocks may play an important role in storing CO 2 in subsurface rock. Copyright © 2012 John Wiley & Sons, Ltd.