Volume 131, Number 3, August 2020
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||31 August 2020|
Improvement of CO2 absorption by ionic liquid electrospray
1 Institute of Fluid Science - 2-1-1 Katahira, Aoba- ku, Sendai 980-8577, Japan
2 Department of Aerospace and Mechanical Engineering, Tohoku University - Sendai, Japan
3 National Institute of Advanced Industrial Science and Technology (AIST) - 4-2-1 Nigatake, Miyagino- ku, Sendai 983-8551, Japan
Received: 20 May 2020
Accepted: 24 July 2020
In this study, an innovative approach for the selective absorption of carbon dioxide (CO2) by ionic liquid electrospray was proposed. First, the fluid dynamical characteristics of ionic liquid electrospray with 1-ethyl-3-methylimidazolium acetate in ambient air was clarified by high-speed imaging and aerosol analysis. This was followed by enhancement of CO2 absorption by ionic liquid electrospray in a closed chamber filled with CO2 which was successfully demonstrated for the first time. The ionic liquid electrospray drastically improves CO2 chemisorption by achieving higher CO2 loading ratio of ionic liquid due to the continuous generation of nano-sized droplets with a large specific surface area, as well as the sufficient spreading of the spray by the Coulomb repulsion between charged droplets.
PACS: 47.55.D- – Drops and bubbles / 82.65.+r – Surface and interface chemistry; heterogeneous catalysis at surfaces / 92.60.Mt – Particles and aerosols
© 2020 EPLA
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