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Chemical Recycling and Upcycling of Waste Plastics: A Review
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Researchers reviewed chemical recycling and upcycling technologies for plastic waste, concluding that these approaches — including pyrolysis, gasification, and solvolysis — offer more effective and scalable solutions than landfilling or incineration by recovering valuable feedstocks from otherwise difficult-to-recycle polymers.
The indiscriminate disposal of plastic waste represents a significant environmental hazard. Conventional remediation techniques, such as landfilling and incineration, also encounter limitations and are unable to adequately address the pollution issue. Chemical recycling and upcycling represent an effective method for the degradation of plastics into oligomers and subsequent transformation into other product substances. This review provides an overview of the various chemical treatment methods currently in use, from the earliest thermal degradation techniques to the emerging strategies. The conventional techniques for thermal degradation of discarded plastics frequently encounter difficulties due to the necessity for elevated temperatures, substantial energy consumption, and the generation of a heterogeneous product mixture. Significant advances have been made in the fields of catalytic solvolysis, hydrotreating, and oxidative cleavage for the recycling and upcycling of plastics under mild conditions. This review provides a comprehensive overview of the chemical treatment methods currently employed for plastics, with a particular focus on the principles and current developments, as well as the reaction mechanisms involved. Additionally, it offers a detailed introduction to various advanced catalytic technologies and the catalysts utilized. Finally, it presents prospective outlooks for different methods, based on their current development status and the gap between actual needs.
More Papers Like This
Catalysis for the Upcycling of Polymers
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This review surveys catalytic strategies — including heterogeneous, biocatalytic, and electrochemical approaches — for breaking down waste plastics into high-value chemicals and raw materials, presenting an overview of how these upcycling technologies address the growing challenge of plastic waste disposal and resource recovery.
Chemical Recycling and Upcycling of Plastic Waste: from Linear to Circular Economy
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Right now, only about 9% of plastic waste actually gets recycled, and most of what does get recycled turns into lower-quality material—not a real solution to the mountains of plastic piling up in our environment (and breaking down into the microplastics we're increasingly finding in our bodies). This review rounds up newer "chemical recycling" methods that can break plastic waste down to its molecular building blocks and even transform it into useful products like lubricants, offering a more promising path to actually reusing plastic instead of just downgrading it. These technologies are still working through real challenges like cost and efficiency before they can make a major dent in the plastic p
Chemical Recycling and Upcycling of Plastic Waste: from Linear to Circular Economy
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This review paper rounds up scientific progress on turning plastic waste into new chemicals and materials—instead of just melting it down into lower-quality plastic (what most "recycling" does today, and only for 9% of waste). Better recycling methods matter for your health because plastic that isn't properly processed often ends up in landfills, oceans, or breaking down into microplastics that contaminate our food, water, and even our bodies. These emerging chemical methods could help close the loop on plastic waste, though the researchers note real challenges remain before this happens at scale, including cost and technical hurdles.
From Plastic Waste to Treasure: Selective Upcycling through Catalytic Technologies
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Researchers review recent advances in catalytic technologies—including thermocatalysis, electrocatalysis, and photocatalysis—for upcycling plastic waste into valuable chemicals, highlighting how selective bond activation can convert what would otherwise be waste into high-value products.
A Panoramic View on Plastic Waste Recycling and Upcycling: Heterogeneous Catalytic Strategies for Diverse Plastics and Multiple Pathways
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Plastic waste is piling up faster than we can deal with it, and that's a problem since it can break down into microplastics that pollute our water, food, and even our bodies. This review rounds up cutting-edge lab techniques—like using special chemical catalysts, light, electricity, and even microwaves—that can break old plastic down and rebuild it into valuable new materials instead of letting it sit in landfills or oceans. While these methods are still being refined for large-scale use, they offer a promising path toward turning plastic trash into useful products, which could ultimately reduce the plastic pollution that threatens both the environment and human health.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.