membrane-technology
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The $106 Million Bet on a Membrane That Refuses to Stay Dirty
Industrial membranes often fail first where the water gets interesting. ZwitterCo built its business around that ugly moment - and is turning cleanability into an operating advantage for factories, dairies and wastewater plants.
Pure Blue Tech Put a Tiny Speaker Inside a Water Filter - and Found a Cheaper Way to Fight the Gunk
Reverse-osmosis plants spend their lives fighting what sticks to a membrane. This 13-person Washington manufacturer wants to make the filter defend itself - without making operators rebuild the plant around it.
Ecolectro Is Trying to Make Green Hydrogen Cheap by Removing the Expensive Parts
The Cornell spinout spent a decade turning stubborn polymer chemistry into an industrial machine. Its wager is simple: green hydrogen gets cheaper when the stack stops shopping for precious metals.
Vimano
Vimano is a Bengaluru-based deep-tech startup building PFAS-free, ion-selective nanotech membranes for the electrochemical devices that power the energy transition - redox flow batteries, AEM electrolyzers, and hydrogen fuel cells. Its proprietary membrane platform tackles the ion-crossover problem that limits efficiency in long-duration energy storage and green hydrogen, and it also adapts the same polymer-film science to thermal management films for satellites. The company's stated goal is to sit inside 1 out of every 2 large-scale energy storage devices, electrolyzers and fuel cells on the planet.
Porifera
Porifera builds forward osmosis membrane systems that concentrate beverages and treat wastewater without heat or pressure. Its proprietary PFO technology removes water from juices, coffee, beer and wine while preserving flavor, aroma and color - cutting energy use up to 80% versus conventional evaporators. In 2025 the company launched Draftfox, a beer concentration and Microkeg dispense system that shrinks a keg by 6x.