Researchers at UCLA and Ewha Womans University have developed a single-reactor process called Alkaline Thermal Treatment that converts unsorted PET, PE, and PP plastic waste into high-purity hydrogen fuel with no carbon emissions. The method, published in PNAS, tackles two problems at once: plastic pollution and clean hydrogen production for hard-to-decarbonize sectors like steel and shipping. This breakthrough arrives as green hydrogen research rebounds from a slow 2023, when only 7% of planned projects met deadlines. It follows a separate Chinese method that produces hydrogen from agricultural waste at $1.54 per kilogram, making it competitive with fossil-based gray hydrogen. The UCLA approach could lower costs further by using waste feedstocks that would otherwise go to landfill. For carbon markets and climate finance, this technology offers a pathway to generate low-carbon hydrogen without relying on dedicated renewable energy capacity. If scaled, it could reduce emissions from industrial processes while addressing the plastic waste crisis. The key question is whether the process can move from lab to commercial scale quickly enough to impact near-term decarbonization goals.
