Enzyme-enhanced CO2 absorption process in rotating packed bed

Carbon dioxide is considered the most important contributor to the global warming effect. To reduce greenhouse gas emissions, CO 2 should be separated from the exhaust gas stream in a selective way. The most often applied technology to capture CO 2 from exhaust gases is the reactive absorption in aqueous amine solutions, which is currently widely used in different industrial applications. The efficiency of this technology could be improved by applying high-gravity technologies that intensify mass transfer and can enable substantial equipment size reduction compared to the traditionally used packed columns. Rotating packed bed (RPB) technology meets these requirements very well. Applying innovative materials such as the highly efficient enzyme carbonic anhydrase can further improve the efficiency of the CO 2 absorption process. This combination of intensified technology together with new solvents is expected to improve the total efficiency of CO 2 absorption. In this study, we present our experimental results of CO 2 absorption using 30 wt% N-methyldiethanolamine (MDEA) solution in water in an RPB unit with and without carbonic anhydrase for different gas and liquid flow rates. The results indicate significantly improved performance of CO 2 absorption, up to 18 times compared to the solvent without enzyme.

Subjects

Carbonic anhydrase

CO absorption 2

MDEA

Rotating packed bed

RPB

DDC Class

540: Chemie

620: Ingenieurwissenschaften

Funding Organisations

Bundesministerium für Bildung und Forschung

More Funding Information

Project co-financed by the Polish National Center for Research and Development and the German Federal Ministry of Education and Research, within the “STAIR II” Polish-German Cooperation for Sustainable Development (Agreement Number STAIR/2/2016).

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

Wojtasik2019_Article_Enzyme-enhancedCO2AbsorptionPr.pdf

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913.45 KB

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Adobe PDF

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Enzyme-enhanced CO2 absorption process in rotating packed bed