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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received October 20, 2022
Revised January 25, 2023
Accepted February 24, 2023
Acknowledgements
The authors would like to acknowledge the financial support of Kermanshah University of Technology for this research under Grant Number S/P/T/1432
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Carbon dioxide absorption by Ammonia-promoted aqueous triethanolamine solution in a packed bed

Chemical Engineering Department, Kermanshah University of Technology, Kermanshah, Iran
Korean Journal of Chemical Engineering, September 2023, 40(9), 2282-2292(11), 10.1007/s11814-023-1403-5
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Abstract

CO2 absorption by ammonia added triethanolamine aqueous solution as a promoter was investigated in terms of absorption percentage (AP), overall volumetric mass transfer coefficient (KGae), and molar flux (NA) in a packed column. Three variables of ammonia concentration (0-5 wt%), Triethanolamine concentration (10-30 wt%), and gas flow rate (1,500-2,500 ml/min) were considered as significant variables in absorption performance. Effect of these variables and their interactions were inspected using the three level factorial response-surface method. Statistical analysis of the results showed that an ammonia concentration with 72.99%, 71.83, and 81.12% has the greatest effect on AP%, NA, and KGae, respectively. Then, gas flow rate with 5.27% and 3.90%, had a great effect on AP% and KGae, respectively. Finally, the optimal operating conditions were determined to maximize the responses. Under optimal operating conditions, the maximum values for AP%, KGae, and NA were 98.94%, 0.202 kmol/h·m3 ·kPa, and 3.901 kmol/m2 ·h, respectively. Thus, adding ammonia to triethanolamine considerably improves the mass transfer performance of solven

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