https://techcrunch.com/2023/04/25/unisieve/

The energy-intensive process of separating and purifying chemicals and gases is a big reason why industries like plastic manufacturing cause so much pollution. UniSieve wants to reduce their carbon emissions and operational costs with its tech, which uses a high-precision membrane with special crystals that can filter specific molecules and ions.

Today the Zurich-based startup announced it has raised $5.5 million in seed funding to pilot and expand its operational capacities. The round, which UniSieve said was oversubscribed, included participation from the Amadeus Apex Technology Fund, Wingman Ventures, CIECH Ventures and Zürcher Kantonalbank.