Solvay has inaugurated what it describes as Europe's first bio-circular silica facility at its Livorno plant in Italy. The unit produces highly dispersible silica (HDS) using bio-based sodium silicate derived from rice husk ash, an agricultural byproduct. The process reduces CO₂ emissions by 35% per tonne of silica compared to traditional methods. Continental Tires has already confirmed it is "very satisfied" with the performance of rice husk ash-based silica and plans to integrate increasing volumes into its tire production. By adopting Solvay's circular silica, tire manufacturers can achieve up to 15% recycled or renewable materials in tire composition, contributing to the industry's 40% sustainable materials target by 2030
Source: Solvay Press Release / European Rubber Journal, January 2026
