Methane SlipRec unit for existing water scrubbing-based biogas upgrading plants.

With our patented SlipRec unit, the methane slip is reduced significantly and the overall performance of water scrubber-based biogas upgrading plants is improved significantly.

Airco Process Technology – Obviously Green

SlipRec Key Features:


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To learn more about our SlipRec solution for upgrading existing biogas plants, and reducing the methane slip to a minimum, please contact us.

To learn more about our water-based upgraders with SlipRec pre-installed, please click here

Why Upgrade to SlipRec


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:

Low power consumption

No need for H2S / VOC polishing
No need for chemicals
No need for heat
All-electric process – no heat source required

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 of 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 not desirable either from an environmental or financial point of view.

Airco Process Technology’s Slip Rec unit changes the game.
In other words, with a SlipRec unit, existing biogas upgrading plants using water scrubbing technology will be equal to or surpass the performance of other upgrading technologies.