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Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column

There is an urgent need for CO2 capture development because of the global warming crisis. Recently CO2 absorption by the mixture of monoethanolamine (MEA) and glycerol, as an eco-friendly solvent, has been considered due to its promising performance and low technical and environmental impacts. Howev...

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Main Authors:	Babamohammadi, S., Rozita, Y., Aroua, M. Kheireddine *, N.Borhani, Tohid
Format:	Article
Published:	Elsevier 2021
Subjects:	TP Chemical technology
Online Access:	http://eprints.sunway.edu.my/1915/ http://doi.org/10.1016/j.jece.2021.106618
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spelling	my.sunway.eprints.19152021-12-02T06:24:49Z http://eprints.sunway.edu.my/1915/ Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column Babamohammadi, S. Rozita, Y. Aroua, M. Kheireddine * N.Borhani, Tohid TP Chemical technology There is an urgent need for CO2 capture development because of the global warming crisis. Recently CO2 absorption by the mixture of monoethanolamine (MEA) and glycerol, as an eco-friendly solvent, has been considered due to its promising performance and low technical and environmental impacts. However, more aspects of this process, especially mass transfer coefficients, need to be studied further. In this work, a bench-scale wetted-wall column was used to find the CO2 mass transfer coefficients in the aqueous blends of MEA (25 wt%) and glycerol (5–20 wt%). The experiments were performed nearly to the industrial conditions of flue gas at atmospheric pressure and three different temperatures (313, 323, and 333 K). The gas flow rate was maintained around 0.17 ± 0.01 stdL/s, and the CO2 partial pressure was in the range of 1–15 kPa. The findings revealed that increasing the glycerol to 10 wt% improves the overall mass transfer (), and adding more glycerol up to 20 wt% decreases the . The gas-side mass transfer resistance () found to be negligible. Thus, the primary mass transfer resistance was in the liquid phase. It is also found that the solution with 10 wt% glycerol and 25 wt% MEA (10G25M) had the highest liquid-side mass transfer coefficient () among the other solutions. The 10G25M showed a comparable and even better absorption rate than solutions with a higher concentration of MEA studied in the literature. Compared with industrial-grade, the of the 10G25M was over two times higher than the 30 wt% MEA solution. Elsevier 2021 Article PeerReviewed Babamohammadi, S. and Rozita, Y. and Aroua, M. Kheireddine * and N.Borhani, Tohid (2021) Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column. Journal of Environmental Chemical Engineering, 9 (6). p. 106618. ISSN 2213-3437 http://doi.org/10.1016/j.jece.2021.106618 doi:10.1016/j.jece.2021.106618
institution	Sunway University
building	Sunway Campus Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Sunway University
content_source	Sunway Institutional Repository
url_provider	http://eprints.sunway.edu.my/
topic	TP Chemical technology
spellingShingle	TP Chemical technology Babamohammadi, S. Rozita, Y. Aroua, M. Kheireddine * N.Borhani, Tohid Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
description	There is an urgent need for CO2 capture development because of the global warming crisis. Recently CO2 absorption by the mixture of monoethanolamine (MEA) and glycerol, as an eco-friendly solvent, has been considered due to its promising performance and low technical and environmental impacts. However, more aspects of this process, especially mass transfer coefficients, need to be studied further. In this work, a bench-scale wetted-wall column was used to find the CO2 mass transfer coefficients in the aqueous blends of MEA (25 wt%) and glycerol (5–20 wt%). The experiments were performed nearly to the industrial conditions of flue gas at atmospheric pressure and three different temperatures (313, 323, and 333 K). The gas flow rate was maintained around 0.17 ± 0.01 stdL/s, and the CO2 partial pressure was in the range of 1–15 kPa. The findings revealed that increasing the glycerol to 10 wt% improves the overall mass transfer (), and adding more glycerol up to 20 wt% decreases the . The gas-side mass transfer resistance () found to be negligible. Thus, the primary mass transfer resistance was in the liquid phase. It is also found that the solution with 10 wt% glycerol and 25 wt% MEA (10G25M) had the highest liquid-side mass transfer coefficient () among the other solutions. The 10G25M showed a comparable and even better absorption rate than solutions with a higher concentration of MEA studied in the literature. Compared with industrial-grade, the of the 10G25M was over two times higher than the 30 wt% MEA solution.
format	Article
author	Babamohammadi, S. Rozita, Y. Aroua, M. Kheireddine * N.Borhani, Tohid
author_facet	Babamohammadi, S. Rozita, Y. Aroua, M. Kheireddine * N.Borhani, Tohid
author_sort	Babamohammadi, S.
title	Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
title_short	Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
title_full	Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
title_fullStr	Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
title_full_unstemmed	Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
title_sort	mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column
publisher	Elsevier
publishDate	2021
url	http://eprints.sunway.edu.my/1915/ http://doi.org/10.1016/j.jece.2021.106618
_version_	1718929292537102336
score	13.211869

Mass transfer coefficients of carbon dioxide in aqueous blends of monoethanolamine and glycerol using wetted-wall column

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