Abstract
Recycling and Life Cycle Assessment (LCA) are important issues for future materials development. Here, in the narrow sense, “recycling” means materials recycling, and is a recycling method in which waste is reused as the raw material for new products. Development of recycling technologies for aluminum alloys and CFRP products was carried out as part of the Project. In substitution of automotive materials for auto body weight reduction, it is necessary to consider the effects on society as a whole. In the Project, we created an LCA model with a system boundary extended spatially and temporally, which can evaluate the environmental, social and economic impacts in Japanese society as a whole up to the year 2050, together with the necessary database, and developed an evaluation tool that demonstrates the model and its database. Technology development related to recycling and LCA is described in detail in this Chap. 8, “Recycling and Life Cycle Assessment (LCA).”
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Notes
- 1.
The Hall–Héroult process, the only refining method practically applied, is a representative of molten salt electrolysis, which obtains the target material by electrolyzing molten raw material. However, enormous energy is required to extract metallic aluminum from alumina.
- 2.
While a metal with a relatively low standard electrode potential is called a “less-noble” metal, a metal with a relatively high standard electrode potential is called a “noble” metal.
- 3.
Sizing agent is applied to the carbon fiber surface to prevent the fiber from damage and improve adhesion with the matrix resin.
- 4.
Functional unit: When conducting the LCA, the functions of products and services for assessment should be identified in setting the objective and scope. The environmental burden as an assessment result is analyzed by the unit quantity of the identified function. This unit quantity of a function is called a functional unit, which should be expressed in a physical quantity and others.
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Seko, T., Yamashita, S., Shida, Ki., Daigo, I. (2023). Recycling and Lifecycle Assessment. In: Kishi, T. (eds) Innovative Structural Materials. Springer Series in Materials Science, vol 336. Springer, Singapore. https://doi.org/10.1007/978-981-99-3522-2_8
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