E.PET塑料瓶回收的LCA.pdf

Resources, Conservation and Recycling 55 (2010) 34–52 Contents lists available at ScienceDirect Resources, Conservation and Recycling j o u rn al h omepage: w w w. elsev /locate/res conrec Open-loop recycling: A LCA case study of PET bottle-to-fibre recycling Li Shen a,∗ , Ernst Worrell b , Martin K. Patel a a Department of Science, Technology and Society, Faculty of Science, Utrecht University, Heidelberglaan 2, 3584CS Utrecht, Netherlands b Department of Innovation and Environmental Sciences, Faculty of Geosciences, Utrecht University, Netherlands a r t i c l e i n f o a b s t r a c t Article history: This study assesses the environmental impact of polyethylene terephthalate (PET) bottle-to-fibre recy- Received 11 December 2009 cling using the methodology of life-cycle assessment (LCA). Four recycling cases, including mechanical Received in revised form 30 June 2010 recycling, semi-mechanical recycling, back-to-oligomer recycling and back-to-monomer recycling were Accepted 30 June 2010 analysed. Three allocation methods are applied for open-loop recycling, i.e. the “cut-off” approach, the “waste valuation” approach and the “system expansion” approach. Nine environmental impact indicators Keywords: were analysed, i.e. non-renewable energy use (NREU), global warming potential (GWP), abiotic depletion, PET recycling acidification, eutrophication, human toxicity, fresh water aquatic ecotoxicity, terrestrial ecotoxicity