I presume polyester or blends could be disposed of via pyrolysis and converted back into oil. Or simply burned for energy. Interestingly, H&M has collected 140

I presume polyester or blends could be disposed of via pyrolysis and converted back into oil. Or simply burned for energy. Interestingly, H&M has collected 140,000 tonnes of textiles through an in-store recycling program so far, and they upcycle but also work with a company called Renewcell to generate new fibers from cotton waste. I'm not sure what they do with the rest of the bulk textile but I presume it's burned or maybe just goes to landfill.