Ultra-fast green hydrogen production from municipal wastewater by an integrated forward osmosis-alkaline water electrolysis system
Hong Kong University of Science and Technology · Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution · +6 more institutions
Abstract
Abstract Recent advancements in membrane-assisted seawater electrolysis powered by renewable energy offer a sustainable path to green hydrogen production. However, its large-scale implementation faces challenges due to slow power-to-hydrogen (P2H) conversion rates. Here we report a modular forward osmosis-water splitting (FOWS) system that integrates a thin-film composite FO membrane for water extraction with alkaline water electrolysis (AWE), denoted as FOWS AWE . This system generates high-purity hydrogen directly from wastewater at a rate of 448 Nm 3 day −1 m − 2 of membrane area, over 14 times faster than the state-of-the-art practice, with specific energy consumption as low as 3.96 kWh Nm −3 . The rapid…
Citation impact
- FWCI
- 20.58
- Percentile
- 100%
- References
- 48
Authors
9- GSGabriela Scheibel Cassol
Hong Kong University of Science and Technology
- CSChii Shang
Hong Kong University of Science and Technology, Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, University of Hong Kong
- AKAlicia Kyoungjin An
City University of Hong Kong
- NKNoman Khalid Khanzada
New York University Abu Dhabi, City University of Hong Kong
- FCFrancesco Ciucci
Hong Kong University of Science and Technology, University of Bayreuth
Topics & keywords
- Hydrogen production
- Forward osmosis
- Wastewater
- Electrolysis of water
- Potassium hydroxide
- Electrolysis
- Renewable energy
- Alkaline water electrolysis