Biomethane Polishing with Ammongas
Biomethane polishing removes residual CO₂ from upgraded biogas or natural gas, enabling the methane to be liquefied. Without this polishing step, remaining CO₂ would freeze and crystallize during the CH₄ liquefaction, leading to operational issues and potential damage to equipment.
To prevent these complications, Ammongas offers a polishing process -similar to a full biogas upgrading plant- that reduces CO₂ levels to below 50 ppm. At this purity, the gas can be safely liquefied and is ready for use as a transport fuel or other energy applications.
