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전과정평가 기법을 활용한 커피박 자원화의 환경부하 저감효과 분석 : 일반합성목재와 커피박합성목재의 환경영향 비교를 중심으로
이종효 ( Jong Hyo Lee ),황용우 ( Yong Woo Hwang ),황윤수 ( Youn Soo Hwang ) 한국폐기물자원순환학회 2022 한국폐기물자원순환학회지 Vol.39 No.6
In this study, we compare the environmental loads of the coffee waste wooden deck and the general wooden deck using the life cycle assessment (LCA). We estimate the coffee waste wooden deck’s environmental advantages by LCA methodology. According to our findings, a coffee waste wooden deck reduces environmental load by 13.2% when compared to a general wooden deck. The reduction ratio for eutrophication potential was 20.4%, acidification potential was 19.4%, and global warming potential was 15.9%. Among the six environmental impact categories, abiotic depletion had the least reduction. In particular, while CO<sub>2</sub> emission reduction may seem insignificant numerically from the functional unit's perspective, it can be considered a significant reduction effect given the characteristics of building materials. Assuming the trail construction, which has 3.6 m of width and 360 m of length (1,320 m<sup>2</sup>), the reduction effect of the environmental load is approximately 11.6 ton CO<sub>2</sub>-eq. Moreover, it reduces environmental load by 11.6 tons of CO<sub>2</sub> equivalent per year and absorbs as much GHGs as 4,936 pine trees or 3,277 oak trees. This study helps management and policymakers visualize the impact of recycling coffee waste on the environment.