Issue |
E3S Web of Conf.
Volume 488, 2024
1st International Conference on Advanced Materials & Sustainable Energy Technologies (AMSET2023)
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Article Number | 03024 | |
Number of page(s) | 8 | |
Section | Green Buildings; Carbon Capture & Recycling of Energy Materials | |
DOI | https://doi.org/10.1051/e3sconf/202448803024 | |
Published online | 06 February 2024 |
Exploring Non-aqueous Solutions for CO2 Capture at Elevated Pressure: An Initial Study for EHA/MOR in DMSO Mixtures
1 Research Centre for Carbon Dioxide Capture and Utilisation (CCDCU), School of Engineering and Technology, Sunway University, No. 5 Jalan Universiti, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
2 Department School of Engineering, Lancaster University, Lancaster LA1 4YW, UK
3 Sunway Materials Smart Science & Engineering Research Cluster (SMS2E), Sunway University, No. 5 Jalan Universiti, Bandar Sunway, Petaling Jaya 47500, Selangor, Malaysia
* Corresponding author: azlanka@sunway.edu.my
Carbon dioxide (CO2) absorption in a non-aqueous solution is a potential technology for reducing greenhouse gas emissions. In this study, a non-aqueous solvent, dimethylsulfoxide (DMSO), was blended with a amines The non-aqueous blended amines absorbents’ CO2 absorption ability was investigated in a high-pressure absorption reactor with a variable absorption pressure (350–1400 kPa) at constant temperature (303.15K). The results showed that 2M EHA in DMSO solution had the highest CO2 loading capacity (molCO2/molamine) when compared with 1M EHA + 1M MOR in DMSO solutions. It was also found that the absorption capacity increased with increasing pressure. The highest CO2 absorption by 2M EHA in DMSO solution was observed at a pressure of 1400 kPa at 303.15 K with 1.2507 molCO2/molamine. The use of non-aqueous blended amine solvents showed no phase separation phenomenon after the CO2 absorption reaction and the formation of carbamate salt was identified through FTIR analysis. 1 M EHA 1M MOR in DMSO has shown a higher initial absorption rate in comparison to 2 M EHA in DMSO which would suggest that the use of a 1M EHA + 1M MOR in DMSO as a non-aqueous solvent could be a promising solution for CO2 capture.
© The Authors, published by EDP Sciences, 2024
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