Researchers from the University of California, Los Angeles and Ewha Womans University in South Korea developed a process to convert unsorted plastic waste into hydrogen [1].

This breakthrough addresses the global plastic-waste crisis by eliminating the need for costly sorting. By transforming trash into a low-carbon fuel source, the method reduces industrial reliance on fossil fuels and lowers overall emissions [3, 4].

The technique, known as alkaline thermal treatment (ATT), converts mixed plastics directly into high-purity hydrogen [1, 2]. Unlike traditional recycling, which often requires specific materials to be separated, the ATT process can transform three of the most common plastics—polyethylene, polypropylene, and PET—into fuel [1].

Carbon management is a central feature of the system. The process captures most of the carbon produced during the conversion, storing it in either solid or liquid form [1, 2]. This prevents the carbon from entering the atmosphere as a greenhouse gas, making the output cleaner than conventional waste-to-energy methods [2].

The research was conducted across laboratories in Los Angeles and Seoul [1, 2]. The findings, announced in late July 2026, suggest a scalable path toward circular chemistry where plastic waste becomes a feedstock for the energy sector [1, 3].

Separate from the academic research, commercial interest in waste-to-hydrogen technology is growing. Hydrogen Utopia International recently raised £850,000 to expand its own modular waste-to-hydrogen plants [4].

“The ATT process can transform three of the most common plastics into hydrogen.”

The ability to process unsorted plastics removes a primary economic barrier to recycling. By creating a high-value product like high-purity hydrogen, this technology shifts plastic waste from a liability to a commodity, potentially incentivizing the collection of plastics that are currently deemed non-recyclable and sent to landfills.