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High-pressure methane and carbon dioxide adsorption on dry and moisture-equilibrated Pennsylvanian coals by B.M Krooss; F van Bergen; Y Gensterblum; N Siemons; H.J.M Pagnier; P David is a Engineering article available to read on EtoBox.

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In the context of research on the reduction of CO 2 emissions and the production of coalbed methane (CBM), high pressure adsorption measurements of CH 4 and CO 2 have been performed on dry and moisture-equilibrated Pennsylvanian coals of different rank (0.72, 1.19 and 1.56% VR r ). Adsorption isotherms of the two gases were measured up to pressures of 20 MPa (200 bar), at 40, 60 and 80 jC using a volumetric method. Total excess sorption capacities for methane on dry coals ranged between 11 and 14 Std. cm 3 /g coal. The 40 jC sorption isotherms showed a saturation behavior while the 60 and 80 jC isotherms exhibited a monotonous increase over the entire experimental pressure range (up to 20 MPa). Methane sorption capacities of moisture-equilibrated coals were lower by f 20 -25% than those for dry coals and ranged between 7 and 11 Std. cm 3 /g coal. No distinct maturity effect was discernible for methane adsorption on the three samples studied, neither in the dry nor in the moist state. CO 2 adsorption isotherms for dry and moist coals showed substantial differences. For dry coals the highest CO 2 excess sorption capacities were observed at 40 jC with maximum values of 70 Std. cm 3 /g

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Author

B.M Krooss; F van Bergen; Y Gensterblum; N Siemons; H.J.M Pagnier; P David

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0166-5162)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)