Issue 69, 2018

Optimum operating parameters of CO2 sorption in turbulent fluidized bed regime using potassium carbonate supported on gamma alumina solid sorbent

Abstract

The promising solid sorbent, potassium carbonate (K2CO3) supported on gamma alumina (γ-Al2O3) was prepared through impregnation by insertion into the sorption turbulent riser to determine the optimum operating parameters. A sorption temperature of 60 °C, superficial gas velocity of 0.22 m s−1, and initial sorbent loading of 5 g were determined to be the optimum conditions so that 93 percent of the actual loaded K2CO3 could react with CO2 to obtain the highest CO2 sorption capacity at 279.95 mg of CO2/g of K2CO3. 23 factorial design plus center points were used to analyze the result of the main effect and interaction between the operating parameters. The sorption temperature, superficial gas velocity, and sorbent loading all impacted the response parameter. From the obtained interpretation, interaction between sorption temperature and superficial gas velocity, as well as between sorption temperature and initial sorbent loading, portrayed statistically significant effects on CO2 capture capacity. Calculations showed that concentration of treated gas was greatly reduced. This distinguished breakthrough behavior provided a step toward designing a continuous reactor to maximize CO2 capture. However, one major obstacle for this design was the persisting formation of hydrated potassium dawsonite, a side product of conventional heat regeneration.

Graphical abstract: Optimum operating parameters of CO2 sorption in turbulent fluidized bed regime using potassium carbonate supported on gamma alumina solid sorbent

Article information

Article type
Paper
Submitted
09 Okt 2018
Accepted
13 Nov 2018
First published
27 Nov 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 39678-39690

Optimum operating parameters of CO2 sorption in turbulent fluidized bed regime using potassium carbonate supported on gamma alumina solid sorbent

S. Boonprasop, S. Sangteerasintop, B. Chalermsinsuwan and P. Piumsomboon, RSC Adv., 2018, 8, 39678 DOI: 10.1039/C8RA08335E

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements