Kinetics study and performance evaluation of a hybrid choline-glycine/polyethylene glycol/water absorbent for CO2 separationShow others and affiliations
2023 (English)In: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 304, article id 122410Article in journal (Refereed) Published
Abstract [en]
Thermodynamic and kinetic properties of absorbents are beneficial in evaluating their CO2 separation performance. In this study, the kinetic properties of CO2 in a hybrid choline-glycine/polyethylene glycol/water absorbent, including the liquid-side mass-transfer coefficient, enhancement factor, and reaction rate constant, were systematically determined through experimental measurements and data processing. Furthermore, an index referred to as “absorbility” was proposed to combine the kinetic properties determined in this study with the thermodynamic properties obtained in our previous study to evaluate the CO2 separation performance. Additionally, the regeneration performance of the hybrid absorbent was also conducted. The results show that the performance of the hybrid absorbent (30 wt% [Cho][Gly] + 10 wt% PEG200 + 60 wt% H2O) is comparable to that of aqueous monoethanolamine, and is thus promising for CO2 separation, considering its low regeneration temperature and low environmental impact.
Place, publisher, year, edition, pages
Elsevier B.V. , 2023. Vol. 304, article id 122410
Keywords [en]
Absorbents, Absorbility, Carbon dioxide, Ionic liquids, Kinetics
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-93795DOI: 10.1016/j.seppur.2022.122410ISI: 000884907000004Scopus ID: 2-s2.0-85140294640OAI: oai:DiVA.org:ltu-93795DiVA, id: diva2:1708068
Funder
The Kempe Foundations, SMK21-0020Swedish Energy Agency
Note
Validerad;2022;Nivå 2;2022-11-02 (sofila);
Funder: Fundamental Research Funds of CAF - Overseas Outstanding Innovative Scientists Exchange Program (grant no. CAFYBB2020GD001); National Natural Science Foundation of China (grant no. 22108115); China Postdoctoral Science Foundation (grant no. 2021M691554)
2022-11-022022-11-022022-12-02Bibliographically approved