On October 8, 2026, Zurich-based deep tech company UniSieve announced that it has raised US$9 million in a Series A funding round. The round was led by the Orano Venture Fund, managed by Supernova Invest, with participation from new and existing investors including Amadeus APEX Technology Fund, Founderful, Zürcher Kantonalbank, and Guenat Holding. This investment brings UniSieve's total funding to date to US$25 million.
Membrane technology for industrial separation
UniSieve develops high-precision hybrid membranes based on metal-organic frameworks and zeolites. These materials are designed to replace energy-intensive thermal separation processes in industrial gas separation and carbon capture. The company states that it has overcome the core challenge of turning these advanced materials into durable membranes that can be manufactured reliably at scale.
Commercial validation and deployment plans
The Series A funding will enable UniSieve to scale its technology in existing markets and expand into additional industrial applications. The company has brought its hybrid membranes to pre-commercial maturity in olefins and point-source carbon capture, supported by repeatable manufacturing, field-validated performance, and deployable systems. This funding marks a shift from technological validation toward broader commercial deployment across chemical processing and industrial gas separation.
Early customer traction
Polish chemicals company Qemetica, formerly CIECH, has begun live testing of a UniSieve CO2 capture unit. The captured carbon dioxide will be used on site to produce carbonates such as soda ash for industrial applications. Investors highlight that UniSieve has moved methodically from pilot deployments to larger systems with paying customers, and that trajectory supports continued backing.
Executive perspectives
Samuel Hess, CEO of UniSieve AG, said that high-precision membranes can replace energy-intensive thermal technology with compact and simple solutions. Jonathan Grosskopf, Investment Director at Supernova Invest, pointed to the team's capital discipline and potential to improve industrial performance. Wolfgang Neubert, General Partner at APEX Ventures, cited the company's clear path from proven technology to meaningful commercial scale.
Strategic investor support
The Orano Venture Fund is a vehicle designed to accelerate Europe's sovereign, sustainable, and low-carbon industrial transition. Managed by Supernova Invest, it targets early-stage deep tech startups at Seed and Series A stages with a focus on industrial performance and advanced engineering. Beyond capital, the fund offers startups access to Orano Group's industrial infrastructure, technical expertise, and corporate synergies.
A broader deep tech landscape
Molecular separation is essential for producing fuels, fertilizers, and plastics, and it accounts for 10% to 15% of global energy use, according to the company. UniSieve competes with point-source capture developers such as Canada's Svante and Europe's ARK Capture Solutions, though its membrane approach avoids heating and cooling cycles. The company was founded in 2018 by ETH Zurich classmates, several years before metal-organic frameworks received the Nobel Prize in Chemistry in 2025.
UniSieve's Series A round positions the company to convert technical validation into commercial sales across industrial gas separation and carbon capture. The funding supports the scaling of membrane systems that reduce energy use, improve product recovery, and control emissions for industrial operators. With paying customers, deployable technology, and fresh capital, the company is moving toward broader industrial adoption.