Journal
INTERNATIONAL JOURNAL OF COAL GEOLOGY
Volume 72, Issue 3-4, Pages 153-164Publisher
ELSEVIER
DOI: 10.1016/j.coal.2007.01.005
Keywords
CO2 sorption; CO2 storage capacity; CO2 isotherm; argonne premium coal; carbon sequestration
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Sorption isotherms, which describe the coal's gas storage capacity, are important for estimating the carbon sequestration potential of coal seams. This study investigated the inter-laboratory reproducibility of carbon dioxide isotherm measurements on moisture-equilibrated Argonne premium coal samples (Pocahontas No. 3, Illinois No. 6, and Beulah Zap). Six independent laboratories provided isotherm data on the three moisture-equilibrated coal samples at 55 degrees C and pressures up to 15 MPa. Agreement among the laboratories was good up to 8 MPa. At the higher pressures, the data among the laboratories diverged significantly for two of the laboratories and coincided reasonably well for four of the laboratories. (c) 2007 Elsevier B.V. All rights reserved.
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