Journal
RESOURCES CONSERVATION AND RECYCLING
Volume 145, Issue -, Pages 67-77Publisher
ELSEVIER
DOI: 10.1016/j.resconrec.2019.02.010
Keywords
LCA; Plastic wastes; Plant capacities; Mechanical recycling; Pyrolysis; Gasification
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Funding
- ExxonMobil Chemical Company
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In Singapore, 822,200 tonnes of plastic waste was generated in 2016, with only 7% recycled. Due to the complex nature of plastic waste mixtures, mechanical recycling is often inefficient, leading to a majority of waste being incinerated. In this article, alternative solutions are introduced to address the waste problem, such as recovering valuable fuels from plastics via thermochemical methods. Life cycle assessment (LCA) was adopted to investigate 8 scenarios of plastic waste management options. In a nation with land scarcity, the scales and sizes of each plastic waste recycling/recovery method is also taken into consideration. The results demonstrated how different combinations of four plastics valorization technologies, and associated capacities, affected the potential environmental benefits and drawbacks of plastic waste treatment systems. In order to enable selecting the best option among the 8 scenarios, normalization and weighting was carried out.
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