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Ahlstrom Expands European Production of Lignin-Based Filtration Media

By incorporating lignin—a renewable by-product of the pulp industry—into advanced filtration materials, the expansion highlights the growing role of wood-derived bio-based materials in replacing fossil-based components across industrial manufacturing.

Photo by Dorelys Smits / Unsplash

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Ahlstrom is expanding European production of its Ahlstrom ECO filtration media, further demonstrating the growing potential of lignin as a high-value, bio-based material for advanced industrial applications.

Production of the filtration media, initially launched at Ahlstrom's facility in Louveira, Brazil, is now available at the company's Turin, Italy, plant. The expansion increases regional manufacturing capacity while supporting customers seeking more sustainable material solutions.

For the forest products and materials industries, the announcement underscores an important trend: finding higher-value uses for lignin, one of the most abundant natural polymers and a renewable by-product of the pulp manufacturing process. Rather than being treated primarily as a low-value energy source, lignin is increasingly being engineered into specialty materials that can reduce dependence on fossil-derived chemicals without sacrificing performance.

In Ahlstrom ECO, lignin replaces approximately 30% of the traditional fossil-based phenolic resin used in filtration media while maintaining the mechanical strength, filtration efficiency and durability required for demanding automotive engine air, oil and fuel filtration applications.

The filtration media is designed to run on existing pleating and filter manufacturing equipment, allowing manufacturers to adopt the material without significant process changes. According to Ahlstrom, the technology also reduces formaldehyde emissions during curing by 40-70 percent, helping manufacturers meet increasingly stringent environmental and workplace health standards.

"With Ahlstrom ECO, we are demonstrating that sustainability and performance can go hand in hand," said Stéphanie Pigeot-Rémy, Head of Global R&D and Product Development, Filtration at Ahlstrom. "Expanding production to Europe enables us to better serve our customers locally while supporting their journey toward more sustainable filtration solutions without compromise."

As manufacturers across multiple industries continue to seek renewable alternatives to petroleum-based materials, innovations that maximize the value of lignin and other wood-derived components are gaining momentum. The expansion of Ahlstrom ECO production reflects the broader shift toward circular material solutions that leverage renewable forest resources in increasingly sophisticated applications beyond traditional wood and paper products.

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