This process tackles one of the hardest textile waste streams: polycotton blends. It uses super-concentrated hydrochloric acid at room temperature to separate polyester for chemical recycling and depolymerises cotton into high-yield glucose. This glucose is produced entirely from waste, avoiding competition with food crops. The acid is not neutralised but recovered and reused, making the method both economical and scalable. The outputs feed circular polymer production, offering a sustainable alternative to landfill, incineration, and fossil feedstocks