Bright Renewables First to Implement Evonik’s 11” Membranes
Bright Renewables First to Implement Evonik’s 11” Membranes in Membrane Separation Biogas Upgrading Technology
Enschede, The Netherlands (March 2025) – Bright Renewables, high-tech supplier of renewable gas systems, is the first to integrate Evonik’s SEPURAN® Green G5X 11” in its membrane separation-based biogas upgrading technology. These newly launched membranes feature the highest capacity of its kind on the market and are designed to decrease costs and maintenance and increase assembly efficiency.
In line with these green membranes, which are produced with 100% renewable energy, Bright developed the PurePac Supra. With a capacity coverage starting at flows as small as 2,500 Nm3/hr (1,471 SCFM) of biogas it is the largest capacity in the company’s biogas upgrading line. This modular upgrader, that purifies biogas to biomethane or renewable natural gas (RNG) with a high methane content, is scalable to much higher capacities through multiplying the setup while maintaining a methane recovery of >99.5%.
The 11” system is packed with ultra-thin polymer membranes to separate methane and carbon dioxide. Its design allows for a more compact setup, requiring fewer membranes while delivering higher performance in a single unit. This results in exceptionally high capacity relative to volume and weight. As a result, the 11” size has become the new standard for large-scale biogas upgrading projects, replacing the 6” membranes – which are still integrated in the other capacity PurePac biogas upgraders.
“We stay agile in adapting to industry trends and adapt through working closely with customers and their wishes, project developers, in-house engineers and R&D teams, and external suppliers. Our strong, long-term partnership with Evonik enables us to drive innovation, and we’re proud to be trusted by many worldwide. These membranes are already in use or soon will be, starting in the Netherlands and the USA, and have a combined upgrading capacity of circa 20,000 Nm3/hr of biogas.”, said Mark Smit, Managing Director of Bright Renewables, headquartered in the Netherlands.
Large-scale Output
Larger-scale biogas upgrading projects are gaining momentum, and Bright is seeing a growing demand for these high-capacity projects. Beyond their economic potential, membrane biogas upgrading technology plays a crucial role in expanding the adoption of renewable energy across the globe.
“Bright Renewables is constantly evolving, just as Evonik continues to push the boundaries of innovation. Both companies share a commitment to advancing high technology products, driving efficiency, and setting new industry standards.”, said Jennifer Doerper, Director SEPURAN® Green at Evonik, with headquarters in Germany and membrane production facilities in Austria.
About Bright Renewables
Headquartered in the Netherlands, Bright Renewables is a leading provider of comprehensive high-tech renewable gas systems: biogas upgrading, bio-LNG, and CO2 liquefaction and capture. Bright Renewables is a family-owned business within the larger HoSt group.
About Evonik
Evonik is one of the world leaders in specialty chemicals. The company is active in more than 100 countries around the world and generated sales of €15.3 billion and an operating profit (adjusted EBITDA) of €1.66 billion in 2023. Evonik goes far beyond chemistry to create innovative, profitable, and sustainable solutions for customers. About 32,000 employees work together for a common purpose: We want to improve life today and tomorrow.
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