New process turns mixed plastic waste directly into hydrogen fuel without sorting

Key Points:

• Researchers at UCLA Samueli School of Engineering and Ewha Womans University have developed a novel chemical process called alkaline thermal treatment (ATT) that converts mixed plastic waste (PET, PE, PP) into high-purity hydrogen fuel without the need for sorting plastics.
• The ATT process operates at significantly lower temperatures than traditional gasification and captures carbon dioxide as a solid mineral (sodium carbonate), preventing greenhouse gas emissions.
• A thermal oxidation pretreatment activates chemically inert plastics like polyethylene and polypropylene, enabling efficient hydrogen production alongside PET.
• This method addresses major challenges in plastic recycling by handling mixed plastics, reducing sorting costs, and producing clean hydrogen, potentially advancing both the hydrogen economy and circular economy.
• Further research is required to optimize the process and assess its economic feasibility for large-scale application.