Carbon dioxide Removal via Absorption using Artificial Seawater in a Microchannel for the Case of CO<inf>2</inf>-Rich Gas
1
Issued Date
2022-05-01
Resource Type
ISSN
02552701
Scopus ID
2-s2.0-85128559363
Journal Title
Chemical Engineering and Processing - Process Intensification
Volume
175
Rights Holder(s)
SCOPUS
Bibliographic Citation
Chemical Engineering and Processing - Process Intensification Vol.175 (2022)
Suggested Citation
Chalermthai P., Akkarawatkhoosith N., Kaewchada A., Jaree A. Carbon dioxide Removal via Absorption using Artificial Seawater in a Microchannel for the Case of CO<inf>2</inf>-Rich Gas. Chemical Engineering and Processing - Process Intensification Vol.175 (2022). doi:10.1016/j.cep.2022.108928 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/84561
Title
Carbon dioxide Removal via Absorption using Artificial Seawater in a Microchannel for the Case of CO<inf>2</inf>-Rich Gas
Author's Affiliation
Other Contributor(s)
Abstract
The separation of CO2 is important for upstream processing of natural gas, which generally contains high concentration of CO2. In this work, a T-microchannel was applied for the absorption of CO2 using artificial seawater as absorbent. The first part involved the optimization of operating conditions for CO2 absorption using water. The experiments were performed under the pressure of 1.7 bar and 60%V/V of CO2 was used as feed mixture. At the optimal condition (the flowrate of liquid of 1 mL/min, the flowrate of gas of 125 mL/min and the temperature of 30 °C), the CO2 removal was 71.14%. The optimized condition was adapted for the application of artificial seawater as absorbent. Each salt including NaCl, CaCl2, and MgCl2 was used at different concentration levels based on the natural concentration in seawater. MgCl2 solution (0.106 mol/L) provided an improvement compared to the case of pure water as absorbent. The removal efficiency and the overall liquid-side mass transfer coefficient (KLa) were 83.88% and 73.12 s−1, respectively. Therefore, seawater can be effectively utilized as absorbent for the removal of CO2.