- 學位論文
經濟考量下之不同材質的回收效益之計算
Calculation of Recycling Benefits of Different Materials Under Economic Considerations
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摘要
全國近年來隨著工商業發展快速，使得飲食文化也轉變為方便即食為主，導致使用一次性容器的需求量大增，連帶產生的大量廢容器已然成為目前最迫切需要解決的環保問題。國內雖有建立回收系統，但並非能夠完全回收所有廢容器，回收廠商的喜好將影響回收廢容器的數量。研究結果顯示，目前鋁、PET跟PP有較佳回收利益，鐵、紙及玻璃的回收效益有待改善。而不被回收廠商喜愛的材質若不進行回收，將直接同一般垃圾被送至焚化廠進行最終處理，此舉是否會造成環境影響，或是增加環境效益，值得探討。因此本研究以生命週期評估法(Life Cycle Assessments, LCA)探討10種常見的一次性容器，以分析此10種材質在回收及不回收的情況下，對環境所造成的效益或影響，並尋求對環境較友善的處理方式，提供決策者參考。根據研究結果，若以回收避免焚化來探討，PET、鋁、PP回收皆有環境效益，玻璃跟PVC尚可，反觀PE、PS、紙類跟鐵進行回收之環境影響較大。本研究亦設計四種廠商回收成本效益的情境，顯示出在無處理成本之下，紙、玻璃及PVC不提供補貼時仍無法以其本身價值進行回收。
並列摘要
The rapid pace of modern society emphasizes on convenience, leading to extensive use and discard of disposable containers. Domestic responsible enterprises pay and subsidize as recycling funds for back-end recyclers to recycle these containers in the four-in-one resource recycling system. Obviously, materials failed to be recycled by the market were recovered through subsidies, yet it is worth the establishment of an appropriate method to evaluate the environmental benefits it generates. This study uses life cycle inventory analysis to investigate the impacts and benefits of recycling and non-recycling of waste containers of different materials on the environment. Also, whether recycling enterprises recycle these containers if subsidies were or were not given will be discussed to understand the benefits of these subsidies. Firstly, a situational simulation of the cost analysis was carried out based on the profits obtainable by the enterprise can obtain through waste containers. Next, the environmental impacts of recycling or not recycling these waste containers were analyzed. After investigation and integration of these two treatment methods, the environmental benefits obtainable when waste containers were converted from non-recycling to recycling after subsidization was discussed. The results showed that all materials after subsidization have their own environmental benefits and partial impacts. The environmental impacts of each material were also analyzed, so as to develop a new treatment technique in order to improve the willingness of enterprises to recycle, as well as to increase the environmental benefits.
參考文獻
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