Exploration of amino sugars as CO2-capturing solvents
Final Report Abstract
This research project aims to investigate the potential use of two amino sugars, glucosamine (GlcN) and N-Acetylglucosamin (NAG), as solvents for CO2 absorption. The advantages of using these amino sugars are their natural occurrence, biodegradability, as well as better chemical risk and safety properties compared to conventional absorbents such as alkanolamines. To evaluate the potential application of new solvents, a rate-based model of an absorption column was created and solved using Aspen Custom Modeler® (ACM). A literature review revealed that only limited information on amino sugars is available. Therefore, missing thermodynamic and equilibrium data for the amino sugar/CO2 systems were determined experimentally. In the first experimental study of phase equilibrium, it was found that NAG has a CO2 absorption capacity similar to pure water, indicating that only physical absorption without chemical reaction between NAG and CO2 occurs. In contrast, glucosamine showed promising capacity and was therefore implemented into the Aspen Properties® database to create a substance properties package for further use in ACM. GlcN was also experimentally investigated in a pilot plant for CO2 absorption to generate the necessary measurement data for the validation of the rate-based model. The accuracy of the thermodynamic model and rate-based model was verified by comparing the experimental and numerical results.
Publications
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Wässrige Aminozuckerlösungen als neue Lösungsmittel zur CO2-Abscheidung, in: Jahrestreffen der ProcessNet Fachgruppen Fluidverfahrenstechnik und Hochdruckverfahrenstechnik, 2022
Hami Dindar, E. Baumhögger, N. Lutters & E. Kenig
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Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung in: Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik und Adsoprtion, 2023
Hami Dindar, N. Lutters & E. Kenig
