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http://dx.doi.org/10.5762/KAIS.2021.22.3.763

Absorption characteristic of carbon dioxide in Ionic Liquids based sulfite anion in the pre-combustion condition  

Baek, Geun Ho (Geneall Biotchnology Co. LTD)
Jang, Hyun Tae (Department of Chemical Engineering, Hanseo University)
Cha, Wang Seog (School of Civil and Environmental Engineering, Kunsan National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.3, 2021 , pp. 763-769 More about this Journal
Abstract
In this study, ionic liquids were synthesized to remove carbon dioxide (CO2) on a laboratory scale. The vapor-liquid absorption equilibrium device (VLE) was used to investigate the carbon dioxide absorption capacity. In the regeneration study, the absorption capacity after regeneration was reduced by approximately 7% for all ionic liquids, in which the anion was sulfite-based, showing excellent regeneration. Ethyl sulfite showed the highest absorption capacity of CO2 among the ionic liquids based on the sulfite anion. In particular, the absorption capacity of [beim] ethyl sulfite was 1.1 mol CO2 / mol IL at an absorption equilibrium pressure of 22 bar. In the regeneration study, the absorption capacity after regeneration was reduced by approximately 7% for all ionic liquids, in which the anion was sulfite-based, from which regeneration is outstanding. After the absorption experiment, the viscosity of the sample tended to decrease by approximately 8% compared to that before the absorption experiment. On the other hand, the absorbent was synthesized in the first step. Moreover, the raw material used is also inexpensive and has excellent reproducibility and highly stable absorbent capacity.
Keywords
Ionic Liquid; Sulfite Anion; Absorption; Regeneration; Viscosity;
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