Author
Listed:
- Xu Tang
- Nino Ripepi
- Ellen Gilliland
Abstract
Understanding the dynamic response of coal to carbon dioxide sorption is crucial for optimizing carbon dioxide sequestration in unmineable coal seams and enhanced coalbed methane recovery. In order to explore the adsorption kinetics of carbon dioxide in coal, 15 isothermal adsorption tests were conducted on bituminous and sub‐bituminous coals at 50°C for increasing equilibrium pressures (up to 4 MPa). The pseudo‐second order (PSO) model is introduced to approximate the carbon dioxide sorption kinetics in coal, and the kinetics properties are then investigated via the PSO model. The linear relationship between (t/q) and (t) is validated and confirmed with a high correlation coefficient (>99%). The kinetics parameter, k 2 , decreases with both increasing equilibrium sorption pressure and increasing pressure difference. The sorption equilibrium content, Q e , in each sorption stage depends on both the final equilibrium pressure and the pressure difference. Based on the relationship between sorption content and time, the sorption content for different pressure ranges is predicted using different time intervals. The analysis indicates that the adsorption process for carbon dioxide in coal is a combination of both bulk diffusion‐controlled and surface interaction‐controlled processes; the former dominates the initial stage while the latter controls the majority of the overall process. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd
Suggested Citation
Xu Tang & Nino Ripepi & Ellen Gilliland, 2016.
"Isothermal adsorption kinetics properties of carbon dioxide in crushed coal,"
Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(2), pages 260-274, April.
Handle:
RePEc:wly:greenh:v:6:y:2016:i:2:p:260-274
Download full text from publisher
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wly:greenh:v:6:y:2016:i:2:p:260-274. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Wiley Content Delivery (email available below). General contact details of provider: https://doi.org/10.1002/(ISSN)2152-3878 .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.