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Title: Comparison of high-pressure CO2 sorption isotherms on Eastern and Western US coals

Accurate estimation of carbon dioxide (CO2) sorption capacity of coal is important for planning the CO2 sequestration efforts. In this work, we investigated sorption and swelling behavior of several Eastern and Western US coal samples from the Central Appalachian Basin and from San Juan Basin. The CO2 sorption isotherms have been completed at 55°C for as received and dried samples. The role of mineral components in coal, the coal swelling, the effects of temperature and moisture, and the error propagation have been analyzed. Changes in void volume due to dewatering and other factors such as temporary caging of carbon dioxide molecules in coal matrix were identified among the main factors affecting accuracy of the carbon dioxide sorption isotherms. The (helium) void volume in the sample cells was measured before and after the sorption isotherm experiments and was used to build the volume-corrected data plots.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1095010
Report Number(s):
NETL-PUB-348
Journal ID: ISSN 0166-5162
DOE Contract Number:
FE0004000
Resource Type:
Journal Article
Resource Relation:
Journal Name: International Journal of Coal Geology; Journal Volume: 118; Conference: Proc. 29th Int. Pittsburgh Coal Conf., Pittsburgh, Oct.15-18, 2012
Research Org:
National Energy Technology Laboratory - In-house Research
Sponsoring Org:
USDOE Office of Fossil Energy (FE)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT