Physical adsorption (ammonia)
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Technology Description
In physical adsorption, molecules are captured on the surface of selective materials called adsorbents. Desorption of the CO2 (release from the surface) may be achieved using pressure swing adsorption (PSA), performed at high pressure, or Vacuum Swing Adsorption (VSA), which operates at ambient pressure. A hybrid configuration also exists, known as Vacuum Pressure Swing Adsorption (VPSA).
Relevance for Net Zero
Physical adsorption is a less technically suitable capture technology compared to physical absorption for application in ammonia production (given that the latter is already applied commercially). As such, physical adsorption may be unnecessary for this application, unless further research finds a suitable and beneficial method to apply in the context of ammonia production.
Key Countries
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