Modeling the transport of CO2 in porous media with aqueous solutions by Gibbs free energy gradient
2010 (English)Conference paper, Poster (Other academic)
The concentration of CO2 in atmosphere has been increasing greatly because of the fossil fuel combustion, which leads to a significant climate changes. CO2 is one of the most important greenhouse gases being responsible for about 64% of the enhanced "greenhouse effect" , and the disposal of anthropogenic CO2 has become an important issue of worldwide concern. Geological sequestration, generally refers to the injection of CO2 into deep geological formations such as deep saline aquifers, depleted hydrocarbon reservoirs or deep coalbeds, is attracting great attention  because of the large capacity and long residence time . To predict the sequestration potential, to study the long-term behavior of CO2, and to estimate the potential for CO2 leakage in the geologic reservoirs, it is necessary to study the transport rate of CO2 in porous media with aqueous solutions. In the present work, the transport rate of CO2 in porous media with aqueous solutions is described and predicted by the Gibbs free energy gradient modeling based on linear nonequilibrium thermodynamics, and the Statistical Associating Fluid Theory equation of state is used to calculate the Gibbs free energy of the components in the investigated systems. The effects of temperature and pressure are analyzed.
Place, publisher, year, edition, pages
Research subject Energy Engineering
IdentifiersURN: urn:nbn:se:ltu:diva-39360Local ID: e133b840-0141-11e0-8b95-000ea68e967bOAI: oai:DiVA.org:ltu-39360DiVA: diva2:1012871
20 Years of the SAFT Equation: Recent Advances and Challenges : 19/09/2010 - 21/09/2010
Godkänd; 2010; 20101206 (yuajiv)2016-10-032016-10-03Bibliographically approved