Journal
JOURNAL OF CLEANER PRODUCTION
Volume 234, Issue -, Pages 1033-1044Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2019.06.202
Keywords
Circular economy; Automobile industry; Reuse; Recycle; Galvanized sheet metal scrap; Metal facade; Building exterior; Capital cost; Energy consumption; Sustainable fabrication
Categories
Funding
- Texas A&M Tier One Program Grant
- General Motors Company
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Today, a significant portion of steel production worldwide is coming from recycling practices. It is inevitable that the smelting process during steel recycling operations is expensive and consumes a tremendous amount of energy. Therefore, hypothetically, direct reuse of steel materials without smelting can be environmentally and economically advantageous over recycling. In this article, an innovative recovering path for size-specific sheet metal scrap from the automobile industry is being proposed. The idea is to directly use the sizable sheet metal scrap generated from the car-body manufacturing process in the automobile industry to design and fabricate new metal facade systems for buildings' exteriors. An empirical case study was conducted, which is being presented to illustrate the benefits of reusing steel scrap over recycling with the same material using quantitative analysis. The required capital cost and energy consumption of generating a building metal facade system were evaluated. The results showed that reusing the sheet metal scrap over conventional recycling of the same material would lead to a cost reduction of approximately 40% (400 $/ton) and savings of approximately 67% (10 MJ/kg) of energy consumption. The tested concept promotes an innovative industrial symbiosis between the auto industry and the building and construction industry through creating a secondary closed supply-chain loop to achieve both circular economy and energy savings through adding value by design. (C) 2019 Elsevier Ltd. All rights reserved.
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