Evonik is the global leader in high‑selectivity gas separation membranes, using deep polymer chemistry expertise to create robust, efficient, and easy‑to‑operate SEPURAN® Green membranes. Ideal for biogas upgrading, these membranes deliver high CO₂/CH₄ selectivity and simplified system designs.

Today, 250+ North American biogas plants and 1,500+ installations worldwide rely on SEPURAN® Green membranes for reliable, high‑quality RNG production.

Evonik’s proven 3‑stage membrane design maximizes methane recovery and energy efficiency—perfect for boosting performance in both new and existing biogas plants.

Driving the next wave of innovation, the new SEPURAN® Green 11” G5X and R2X are the highest‑capacity biogas membranes on the market and enable lighter, more compact, and cost‑effective systems.

Choose Evonik for your biogas upgrading project!