This category includes the following categories of technologies for biogas upgrade to biomethane: Pressure Swing Adsorption (PSA), Pressure Water Scrubbing (PWS), Membranes, Cryogenic, and Organic Physical Scrubbing (OPS).
Áirítear sa chatagóir seo na catagóirí teicneolaíochta seo a leanas chun bithghás a uasghrádú ina bhithmheatán: Asúchán trí aistriú brú (Pressure Swing Adsorption PSA), Íonú le huisce faoi bhrú (Pressure Water Scrubbing PWS), Deighilt scannán (Membranes), Deighilt crióigineach, Íonú fisiceach orgánach (Organic Physical Scrubbing OPS).