Hydrogen from wastewater: integrating treatment and renewable energy to cut emissions

University of South Wales

Academics: Prof. Alan Guwy, Dr. Jaime Massanet-Nicolau

External Partner: HydroStar Europe Limited

HYDROLOOP is developing an integrated system that links wastewater treatment with hydrogen production, turning waste into a valuable energy resource. Working with industrial partners HydroStar and Dŵr Cymru Welsh Water, the project combines advanced oxygen-based treatment with innovative electrolysis. Treated wastewater is used to produce hydrogen, while the oxygen generated is reused to improve treatment efficiency.

The system reduces energy use, lowers emissions, including nitrous oxide, and cuts operational costs, while producing hydrogen without freshwater. It also offers potential to reduce pollutants such as PFAS and antimicrobial resistance contaminants. Demonstrated at pilot scale, it provides a scalable model for wider adoption.