Kinetics study and performance comparison of CO2 separation using aqueous choline-amino acid solutionsShow others and affiliations
2021 (English)In: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 261, article id 118284Article in journal (Refereed) Published
Abstract [en]
The thermodynamic and kinetic properties of CO2 in aqueous choline-amino acids ([Cho][AA]s) are important information to demonstrate their performance. In this study, the apparent kinetic properties of CO2 in the five aqueous [Cho][AA]s, including the liquid-side mass-transfer coefficients, enhancement factor, and reaction rate constant, were systematically studied. Furthermore, a new ‘‘absorption ability’’ (AA) index was proposed, combining the apparent kinetic properties determined in this study and thermodynamic properties determined in our previous study. The CO2 separation performance using aqueous [Cho][AA]s was evaluated based on the AA and CO2 desorption enthalpy values. The results show that 30 wt% aqueous choline-serine is a promising absorbent for CO2 separation, and it is comparable to aqueous monoethanolamine.
Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 261, article id 118284
Keywords [en]
Ionic liquids, Carbon dioxide, Kinetics, Performance comparison
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-82246DOI: 10.1016/j.seppur.2020.118284ISI: 000614730400002Scopus ID: 2-s2.0-85098985290OAI: oai:DiVA.org:ltu-82246DiVA, id: diva2:1515951
Funder
Swedish Energy Agency, P40548-1
Note
Validerad;2021;Nivå 2;2021-01-11 (alebob);
Finansiär: Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao Young Scholars (21729601), National Natural Science Foundation of China (21776123, 21838004, 21908093), China Postdoctoral Science Foundation funded project (2020M671461)
2021-01-112021-01-112021-03-04Bibliographically approved