Assessment of Carbon Footprint Reduction and Environmental Sustainability Benefits for Recycling Used Containers
|關鍵字:||容器回收;環境永續效益;減碳;生命週期評估;永續環境系統分析;container recycling;environmental sustainability benefit;carbon footprint reduction;life cycle assessment;sustainable environmental systems analysis|
Container recycling is one of the important policies for resource recovery and has been implemented for many years in Taiwan. However, so far no appropriate method is available for estimating the carbon footprint reduction and environmental sustainability benefits for recycling containers. This research is thus initiated to establish methods to assess these benefits. The methods to be developed in this study include two major parts for estimating the carbon footprint reduction and environmental sustainability benefits, respectively, for recycling containers. First, the containers to be studied are selected and their recycling and reuse scopes are defined. A software, SimaPro, is used to perform the life cycle assessment (LCA) of each container recycling, based on the data collected for material and energy inputs, production, transportation, recycle, reuse, and waste disposal. The carbon footprint reduction and environmental sustainability benefits are estimated based on the LCA results. The carbon footprint reduction and environmental sustainability benefits are evaluated by three methods: one-time recycling, recycling pathway, and recursive recycling. Finally, several possible scenarios with different material flow ratios for major life cycle stages are analyzed. According to the LCA results for the functional unit of 1kg, the aluminum container has the highest impact and thus has the highest recycling benefit too. However, for the total overall recycling benefit, the top three are glass, PET, and PE containers instead. For the impact estimated based on the functional unit of 1L, the top three are aluminum, glass and iron containers. The results provide not only the estimations of carbon footprint reduction and environmental sustainability benefits, but also useful reference data for making related decisions. The methods established are also expected to be applicable for assessing other recycling tasks.
|Appears in Collections:||Thesis|