폐어망 플레이크 섬유보강재 적용에 따른 전과정 환경성 및 경제성 분석 = Analysis of Life Cycle Environmental Effect and Economic Feasibility Analysis of Waste Fishing Net Flakes Applied as Concrete Fiber Reinforcement

국문 초록 (Abstract)

없음

다국어 초록 (Multilingual Abstract)

This study analyzed the potential reduction in environmental impact achieved by repurposing waste fishing nets, whichconstitute half of marine debris, as concrete fiber reinforcement. Using a life cycle assessment methodology, the entireprocess was evaluated. Additionally, a cost-benefit analysis (B/C analysis) was conducted to assess the feasibility of thefishing net recycling project. The environmental impact analysis revealed the most significant reduction occurring in theacidification potential (AP) category, with a decrease of 1.13E-01 kg SO2-eq., indicating a reduction rate of 93.81%. Othernotable reduction percentages were found in photochemical smog (POCP) at 8.14E-03 kg C2H4-eq. (69.54%) andeutrophication (EP) at 9.81E-03 kg PO43-eq. (51.08%). The reductions in global warming potential (GWP), ozone depletionpotential (ODP), and abiotic depletion potential (ADP) were relatively lower at 8.03E+00 kg CO2-eq. (5.43%), 3.86E-08kg CFC-11-eq. (2.03%), and 8.48E-03 kg Sb-eq. (2.14%), respectively. Furthermore, with raw material acquisition costsset at 10% of the price per ton of new nylon (approximately 2.8 million KRW) and post-processing recycled productsales prices at 60% of the new product price, the B/C ratio was calculated to be 3.00. Given these parameters and assumingcomplete sales of waste fishing net flakes, the average annual expected profit amounts to KRW 1,086.5 million, with aprojected total profit of KRW 5,432.6 million over five years. This study represents the first analysis of both theenvironmental and economic impacts of recycling waste fishing nets as concrete reinforcement. Its significance lies inits ability to quantify and visualize the environmental impact avoidance resulting from waste resource utilization.
Furthermore, given the gradual progress in the recycling of discarded fishing nets, the findings of this study are anticipatedto serve as valuable foundational research data for designing domestic marine waste management measures.