New liquid-based CO₂ capture tech for industrial emissions

Shows capacities for high CO2 capture under power plant operating conditions, minimizing energy-intensive temperature swings of other techs

by Mohen S. Yeganeh, et al. 11/02/2022 in Science Advances
Solid with infused reactive liquid (SWIRL): A novel liquid-based separation approach for effective CO2 capture: Economical CO2 capture demands low-energy separation strategies. We use a liquid-infused surface (LIS) approach to immobilize reactive liquids, such as amines, on a textured and thermally conductive solid substrate with high surface-area to volume ratio (A/V) continuum geometry…. [The technology] shows stable, high capture capacities at power plant CO2 concentrations near flue gas temperatures, preventing energy-intensive temperature swings needed for other approaches.

VC1 Editor’s comment: The science behind this technology appears to be valid, but implementing it will be too costly and engineering intensive for applications other than mitigating already concentrated carbon emissions from power plant flue gases and other large-scale industrial emitters. However, in this application the technology described here would seem to have significant advantages over other proposed technologies.

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