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  4. Effects of chemical absorption on mass transfer from single carbon dioxide bubbles in aqueous sodium hydroxide solution in a vertical pipe
 
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Effects of chemical absorption on mass transfer from single carbon dioxide bubbles in aqueous sodium hydroxide solution in a vertical pipe

Publikationstyp
Journal Article
Date Issued
2021-12-14
Sprache
English
Author(s)
Sa'adiyah, Devy Setiorini  
Matsuo, Yuki  
Schlüter, Michael  orcid-logo
Kurimoto, Ryo  
Hayashi, Kosuke  
Tomiyama, Akio  
Institut
Mehrphasenströmungen V-5  
TORE-URI
http://hdl.handle.net/11420/9936
Journal
Chemical engineering science  
Volume
245
Article Number
116852
Citation
Chemical Engineering Science 245: 116852 (2021-12-14)
Publisher DOI
10.1016/j.ces.2021.116852
Scopus ID
2-s2.0-85107807732
Mass transfer rates kL of single carbon-dioxide bubbles with chemical absorption in a vertical pipe were investigated using aqueous sodium hydroxide solutions. The pH of the solution was varied from 12 to 13.15. The pipe diameter D was 12.5 mm. The bubble diameter d was varied for 0.4 < d/D < 1.4 to cover various bubble shapes. The enhancement factor, E, which is the ratio of kL with and without chemical absorption, was almost unity for pH < 12.25. Then E increased with increasing pH and d for pH > 12.25. Its magnitude was, however, lower than the estimation by the two-film theory. An E correlation was developed. Good estimation of the Sherwood number for bubbles with chemical absorption was obtained by combining the E correlation and the Sherwood number correlations for bubbles without chemical absorption. Applicability of the correlations to bubbles in a larger pipe diameter was also examined.
Subjects
Chemical absorption
CO bubble 2
Enhancement factor
Sodium hydroxide (NaOH)
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