Researchers at the University of Colorado Boulder have developed a custom flow cell and used Raman spectroscopy to observe the chemical reactions inside direct air capture systems. This allows scientists to see exactly how CO2 interacts with alkaline liquids in real time, rather than relying on input and output measurements. These insights help identify inefficiencies, such as the formation of bicarbonate layers that can slow down capture. By refining the chemistry and flow dynamics, engineers can potentially lower the energy costs and operational expenses of industrial carbon removal plants.
