A Study on Eco-Efficiency for Recycling Method of CFRP

초록

Eco-efficiecy, in general term, means creating more value of product with less impact to environment. It is expressed by the ratio of economic value created and environmental burden that relevance in a specific management. Is this article, the waste management of CFRP at the end of life stage through the two recycling methods is studied. The scope of work is at recycling system, so the value of economy and environmental performance are evaluated only the activities involved the system. The economic value derives from the cost of materials and utilities consumption, called operating cost, while the revenue comes from the sale of recovered carbon fiber and credit avoid landfill. Because the energy dependence and global warming are increasing concern, it is selected as th environmental factor for this study. The functional unit of comparison is 102 g of CFRP flow into the system. The main material and utility used for nitric acid method are nitric solution and electricity. There is only electricity used for processing the pyrolysis method. Eco-effiency through global warming impact of pyrolysis in atmosphere and nitric acid are 0.99 and 26.04 respectively. Meantime, eco-efficiency using cumulative energy of pyrolysis and nitric acid are 24.06 and 12578.97 respectively. So, the results of this study indicate that pyrolysis recycling method is more environmental friendly due to its eco-efficiency indicator is lower than nitric acid recycling method.