Interesting study on various #plastic #recycling technologies. #Pyrolysis and #gasification are worst, as you might imagine, because they're just using the plastic as a carbon source. Mechanical recycling is the best from an efficiency and environmental impact standpoint, but it produces the lowest quality material, so you can't really use it more than once. #Glycolysis, which uses #EthyleneGlycol to depolymerize #PET, is the best-performing chemical method, and it's pretty close to #ClosedLoop.

https://www.alleghenyfront.org/advanced-plastic-recycling-is-costly-and-environmentally-problematic-a-new-government-study-finds/