"The Era of Hassle-Free Plastic Recycling Is Becoming a Reality!
– KIMM-led Plasma Project Develops the World’s First Technology to Recycle Mixed Waste Plastics Without Sorting" (2025)
https://www.kimm.re.kr/eng/sub011001/view/id/1435
westurner · 1d ago
Flash heating also recycles unsorted plastics (HCO) into CO/CO2,OH, and Graphene (C), but the energy usage for flash heating is probably higher.
From "'Chemical recycling': 15-minute reaction turns old clothes into useful molecules" (2024) regarding microwave-assisted pyrolysis: https://news.ycombinator.com/item?id=40876505 :
> "Green H2” from water electrolysis using renewable energy evolves no CO2, but costs 2–3× more, making it presently economically unviable. Here catalyst-free conversion of waste plastic into clean H2 along with high purity graphene is reported. The scalable procedure evolves no CO2 when deconstructing polyolefins and produces H2 in purities up to 94% at high mass yields. The sale of graphene byproduct at just 5% of its current value yields H2 production at a negative cost. Life-cycle assessment demonstrates a 39–84% reduction in emissions compared to other H2 production methods, suggesting the flash H2 process to be an economically viable, clean H2 production route.
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Does fusion induction welding work as a method for heating plastic to recycle it? Is it any more efficient than hydrogen plasma and microwave?
westurner · 1d ago
Couldn't they power the sorting of non-plastics using the hydrogen from flash-heating plastic?
CopenHill (Amager Bakke) in Copenhagen does trash recycling that efficiently. This information might be useful to them.
From "'Chemical recycling': 15-minute reaction turns old clothes into useful molecules" (2024) regarding microwave-assisted pyrolysis: https://news.ycombinator.com/item?id=40876505 :
> Flash heating plastic yields Hydrogen and Graphene; "Synthesis of Clean Hydrogen Gas from Waste Plastic at Zero Net Cost" (2023) https://onlinelibrary.wiley.com/doi/10.1002/adma.202306763 .. https://news.ycombinator.com/item?id=37886982 :
> "Green H2” from water electrolysis using renewable energy evolves no CO2, but costs 2–3× more, making it presently economically unviable. Here catalyst-free conversion of waste plastic into clean H2 along with high purity graphene is reported. The scalable procedure evolves no CO2 when deconstructing polyolefins and produces H2 in purities up to 94% at high mass yields. The sale of graphene byproduct at just 5% of its current value yields H2 production at a negative cost. Life-cycle assessment demonstrates a 39–84% reduction in emissions compared to other H2 production methods, suggesting the flash H2 process to be an economically viable, clean H2 production route.
..
Does fusion induction welding work as a method for heating plastic to recycle it? Is it any more efficient than hydrogen plasma and microwave?
CopenHill (Amager Bakke) in Copenhagen does trash recycling that efficiently. This information might be useful to them.