PSA
Pressure swing adsorption, typically with molecular sieves. Widely used on Indian CBG plants. Sensitive to how well the gas was cleaned first.
Biogas upgrading
Three common routes to biomethane
Upgrading raises methane by removing carbon dioxide. Saimona evaluates PSA, water scrubbing, membrane separation and other routes through partners — against water, energy, methane slip, pretreatment and offtake specification.
Routes
PSA, water scrubbing and membranes
Each upgrading family is an industry option. Water, power, methane slip, footprint and how well the gas was cleaned first usually decide. Saimona does not sell a house upgrader brand.
Water scrubbing
Physical absorption of CO₂ in water under pressure. Mature, chemically simple, with water and energy use as the operating conversation.
Membranes
Polymer membranes preferentially permeate CO₂. Compact skids; staging is used to balance recovery and purity. Pretreatment remains critical.
No upgrading route is universally “best”. Water, power, methane slip, footprint and how well the gas was cleaned first usually decide. Saimona’s role is to put those trade-offs in front of the sponsor and then integrate the chosen skid with digestion and compression — through partners, not as a proprietary upgrader brand.
Project enquiry
Have a CBG project in mind?
Share feedstock, location and stage. We will discuss technology, feasibility and a practical project pathway.