Circularizing PET-G Multimaterials: Life Cycle Assessment and Techno-Economic Analysis.

Autor:	Huang P; Department of Materials, Henry Royce Institute, The University of Manchester, Manchester M13 9PL, U.K., Ahamed A; Pragmatic Semiconductor Ltd., Cambridge CB4 0WH, U.K., Sun R; School of Engineering, The University of Manchester, Manchester M13 9PL, U.K., De Hoe GX; Department of Materials, Henry Royce Institute, The University of Manchester, Manchester M13 9PL, U.K., Pitcher J; Mastercard DigiSec Lab, 5 Booths Park, Chelford Road, Knutsford WA16 8QZ, U.K., Mushing A; Mastercard DigiSec Lab, 5 Booths Park, Chelford Road, Knutsford WA16 8QZ, U.K., Lourenço F; Mastercard DigiSec Lab, 5 Booths Park, Chelford Road, Knutsford WA16 8QZ, U.K., Shaver MP; Department of Materials, Henry Royce Institute, The University of Manchester, Manchester M13 9PL, U.K.
Jazyk:	angličtina
Zdroj:	ACS sustainable chemistry & engineering [ACS Sustain Chem Eng] 2023 Oct 13; Vol. 11 (42), pp. 15328-15337. Date of Electronic Publication: 2023 Oct 13 (Print Publication: 2023).
DOI:	10.1021/acssuschemeng.3c04047
Abstrakt:	The recycling of multimaterials such as payment or access cards poses significant challenges. Building on previous experimental work demonstrating the feasibility of chemically recyclable payment cards made from glycol-modified poly(ethylene terephthalate) (PET-G), we use life cycle assessment and techno-economic analysis to investigate two chemical recycling scenarios and evaluate their potential environmental and economic benefits. Recovering all components from the depolymerized products (Scenario 1) achieves substantial environmental benefits across most categories, reducing global warming by up to 67% compared to only recovering major components (Scenario 2). However, the environmental benefits in Scenario 1 incur 69% higher total annualized costs, causing its profitability to be dependent on a minimum selling price of £13.4/kg for cyclohexanedimethanol and less than a 10% discount rate. In contrast, Scenario 2 is less sensitive to discount rate variation and thus a lower risk and more economically feasible option, albeit less environmentally sustainable. Competing Interests: The authors declare no competing financial interest. (© 2023 The Authors. Published by American Chemical Society.)
Databáze:	MEDLINE
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