Experimental Modeling of CO2 Absorption into Monoethanolamine Amine Using Response Surface Methodology

Document Type : Original Article

Authors

Iran University of Science and Technology

Abstract

Carbon dioxide gas is one of the main environmental pollutants that can cause irreparable damage by changing the climate, so solving this problem requires serious attention. Chemical absorption of CO2 with alkanoamine aqueous solutions is currently the most common commercial method of high-efficiency separation in the industry. Among the various methods of removing carbon dioxide from flue gases, the monoethanolamine (MEA) aqueous solvent absorption process has been the most important option for industrial applications in recent years. In this research, MEA solvent has been used to evaluate the amount of CO2 absorption. The experimental range of the studied parameters includes temperature of 20-60 C, pressure of 3.5-9.5 bar and solvent concentration of 2.5-8.5% w. Loading and CO2 absorption percent in MEA aqueous solution were obtained in the range of 0.70-2.615 and 17.81-48.65%, respectively. To analyze the results, the quadratic polynomial model using the response surface method (RSM) has been used. Numerical optimization has also been used to find the maximum loading and absorption percent under optimal conditions. Under optimal conditions, the maximum loading and absorption percent are estimated to be 0.552 and 44.17%, respectively.

Keywords

References

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Iranian Chemical Engineering Journal
Volume 19, Issue 111
November and December 2020
Pages 43-54

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