The extraction began with green coffee beans inside the drying chamber. Liquid CO2 is pumped in and heated to the supercritical point. After a few hours, the caffeine will have been extracted from ...

A research team has made significant discoveries regarding the complex reaction mechanisms of carbon dioxide (CO₂) in supercritical water. These findings are crucial for understanding the ...

Unveiling hidden reaction kinetics of carbon dioxide in supercritical aqueous solutions. Proceedings of the National Academy of Sciences , 2024; 122 (1) DOI: 10.1073/pnas.2406356121 Cite This Page : ...

The company claims this method of extraction, which uses supercritical CO2 instead of water, would be carbon negative and does not share the same risks as hydraulic fracturing, or fracking.

Researchers in Spain have designed a pumped thermal energy storage system that uses supercritical carbon dioxide as a heat pump and a heat engine. The proposed system is claimed to achieve an ...