Abstract
This study assesses the environmental impact of polyethylene terephthalate (PET) bottle-to-fibre recycling
using the methodology of life-cycle assessment (LCA). Four recycling cases, including mechanical
recycling, semi-mechanical recycling, back-to-oligomer recycling and back-to-monomer recycling were
analysed. Three allocation methods are applied for open-loop recycling, i.e. the “cut-off” approach, the
“waste valuation” approach and the “system expansion”
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