UniSieve raises $9m Series A for industrial gas separation
Orano Venture Fund leads financing to scale membrane technology for industrial processes and carbon capture.
UniSieve announced a $9 million Series A on 8 October 2026, led by Orano Venture Fund. Amadeus APEX Technology Fund, Founderful, Zürcher Kantonalbank and Guenat Holding also participated.
The Zürich company develops high-precision membranes that separate industrial gases. Its approach aims to replace energy-intensive thermal separation with compact equipment that helps customers recover products and control emissions.
The funding will support deployment in existing markets and development of additional industrial applications. UniSieve has brought its membranes to pre-commercial maturity in olefins and point-source carbon capture, supported by repeatable manufacturing and field validation.