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Title

Effect of pressure and temperature on diffusion of CO2 and CH4 into coal from the Lorraine basin (France)

Publication Year

2010

Author(s)
  • Charriere, Delphine
  • Pokryszka, Zbigniew
  • Behra, Philippe
Conference
International Conference on Coal and Organic Petrology Date: SEP 21-27, 2008 Location: Oviedo, SPAIN
Source
INTERNATIONAL JOURNAL OF COAL GEOLOGY Volume: 81 Issue: 4 Pages: 373-380 Published: 2010
ISSN
0166-5162
Abstract

Adsorption kinetics of CO2 and CH4 from a high volatile bituminous coal of the Lorraine basin (north-east of France) were studied at 0.1 MPa and 5.0 MPa in a range of temperatures from about 283.15 K to 333.15 K. Kinetic measurements were performed using a gravimetric experimental set-up, which allows measurement of gas density. Sorption equilibrium is reached faster for CO2 than CH4. The differences are mainly due to the physico-chemical parameters of both gas molecules and their coal-interactions. The pressure-dependence of diffusion parameters in coals was shown. Increasing gas pressure decreases the equilibrium time. For example, the CO2 equilibrium time is about 15 h at 5 MPa and about 40 h for 0.1 MPa. The study of kinetic sorption at different temperatures suggested that the diffusion of gases into coal is activated for CO2 and CH4. The effective diffusion, De, and the diffusion coefficient, D, estimated from modelling experimental data by assuming Fickian and unipore diffusion, increased with increasing temperature. The diffusion coefficient was estimated at about 10(-12) m(2) s(-1). Assuming Arrhenius' law, the activation energy of CO2 adsorption was rather low, about 18 kJ mol(-1) compared to the one of CH4. about 34 kJ mol(-1). (C) 2009 Elsevier B.V. All rights reserved.

Author Keyword(s)
  • CO2 sequestration
  • Coal
  • Unipore model
  • Energy of activation
KeyWord(s) Plus
  • CARBON-DIOXIDE ADSORPTION
  • ARGONNE PREMIUM COALS
  • MACROMOLECULAR STRUCTURE
  • ACTIVATED DIFFUSION
  • PORE STRUCTURE
  • METHANE
  • SORPTION
  • TRANSPORT
  • PENETRANTS
  • DENSITY
ESI Discipline(s)
  • Engineering
  • Geosciences
Web of Science Category(ies)
  • Energy & Fuels
  • Geosciences, Multidisciplinary
Adress(es)

[Charriere, Delphine; Pokryszka, Zbigniew] INERIS, F-60750 Verneuil En Halatte, France; [Charriere, Delphine; Behra, Philippe] Univ Toulouse, INPT, LCA, ENSIACET, F-31077 Toulouse 04, France; [Charriere, Delphine; Behra, Philippe] INRA, LCA, F-31077 Toulouse, France

Reprint Adress

Charriere, D (reprint author), INERIS, Parc Technol Alata,BP2, F-60750 Verneuil En Halatte, France.

Country(ies)
  • France
CNRS - Adress(es)
    Accession Number
    WOS:000276559600017
    uid:/X48B84BQ
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