“Better recycling through chemistry”

“While it’s true that any type of recycling reduces the need for fossil fuels and reduces the amount of waste that continues to taint our landscapes and our oceans, not all recycling is the same. Looking specifically at plastics, most plastics are recycled mechanically, which means they are shredded and then melted and pelletized so that they can be reused as recycled plastic. While this is a relatively simple and inexpensive approach, it introduces a number of compromises and is technically considered downcycling, because there is a loss of quality each time the material is processed. This means that there are a finite number of times the material can be recycled.”

https://www.greenbiz.com/article/better-recycling-through-chemistry

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