Transforming biogas into biomethane using water scrubbing, is a reliable, chemical, and heat-free solution for biogas upgrading. When compared with other upgrading technologies such as Membrane, PSA, and Amine solutions – water scrubbing offers the following advantages:
One of the less desirable characteristics of water scrubbing-based upgrading plants has until now been a high methane slip. Existing plants have today a direct loss of unutilized biomethane on between 1 and 3% (direct loss of production capacity and revenue) – diluting the green footprint of the entire biogas plant.
A common way to overcome the biomethane emissions has been, to equip the plant with an RTO unit (Regenerative Thermal Oxidizer). It burns off the methane slip and converts the just produced renewable energy into CO2 and heat, which is obviously not desirable either from an environmental or financial point of view.