| Summary: | 碩士 === 明新科技大學 === 工業工程與管理系碩士班 === 103 === In the study, the standards of ISO/TS 14067 and the carbon footprint (CFP) guide of EPA are used to investigate the required principles and methods to assess CFP of recycled plastic particles. Based on the relevant standards, the CFP of recycled plastic particles is gained and scenario analysis is conducted. A real waste plastics recycling company which is authorized by the Bureau of Environmental Protection is used as a case study and the most popular recycled plastic particles (i.e., polypropylene (PP) recycled plastic particles) in the company is chosen as the target product to assess the CFP of recycled plastic particles. The system boundary is “cradle to gate”, that is, the CFP quantification shall include the life cycle of the products from raw material acquisition to production. The functional unit is “a bag of PP recycled plastic particles (653 Kg in weight)”. The results of the study show that the CFP of PP recycled plastic particles is 264.737 Kg CO2e per functional unit, i.e., 0.407 Kg CO2e per Kg. Comparing with the new one, the CFP of new PP plastic particles is 1.7 Kg CO2e per Kg. Moreover, this study investigates a carbon reduction scenario which assumes that the greenhouse gases emissions of packaging and tap water are diminished. The results show that the CFP of carbon reduction scenario is 257.316 Kg CO2e per functional unit, that is, reducing 2.8% of the CFP when compared with base scenario. The results of the study can be used as the reference for carbon reduction during product’s life cycle. Moreover, the results can provide customers who care about their environment with information about plastic particles materials (recycled plastic particles or new plastic particles) selection.
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