Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective

Consequential life cycle assessment (CLCA) enables evaluating the environmental consequences of market dynamics overlooked by attributional life cycle assessment (ALCA). A consequential life cycle optimization (CLCO) framework is developed in this work to determine the economically optimal and most...

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Autores principales:	Xiang Zhao, Fengqi You
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/dc7353d721bc458c86f5650d1c654e73
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id	oai:doaj.org-article:dc7353d721bc458c86f5650d1c654e73
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spelling	oai:doaj.org-article:dc7353d721bc458c86f5650d1c654e732021-11-15T21:46:59ZEconomic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective10.3303/CET21882002283-9216https://doaj.org/article/dc7353d721bc458c86f5650d1c654e732021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11993https://doaj.org/toc/2283-9216Consequential life cycle assessment (CLCA) enables evaluating the environmental consequences of market dynamics overlooked by attributional life cycle assessment (ALCA). A consequential life cycle optimization (CLCO) framework is developed in this work to determine the economically optimal and most environmentally sustainable chemical recycling pathway for high-density polyethylene waste. The framework includes CLCA and techno-economic analysis (TEA), and the CLCO problem is formulated as a multi-objective mixed-integer nonlinear fractional programming problem (MINFP) that is effectively solved by an optimization algorithm. This multi-objective optimization problem aims to minimize the unit life cycle environmental impacts with maximum unit net present value (NPV). Environmental assessment results show that the total greenhouse gas (GHG) emissions evaluated by the CLCA approach are 14.22 % lower than those assessed by the ALCA approach. By evaluating the ReCiPe end-point score, CLCA further reduces the total environmental impacts corresponding to particulate matter formation by 17.37 %.Xiang ZhaoFengqi YouAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Xiang Zhao Fengqi You Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
description	Consequential life cycle assessment (CLCA) enables evaluating the environmental consequences of market dynamics overlooked by attributional life cycle assessment (ALCA). A consequential life cycle optimization (CLCO) framework is developed in this work to determine the economically optimal and most environmentally sustainable chemical recycling pathway for high-density polyethylene waste. The framework includes CLCA and techno-economic analysis (TEA), and the CLCO problem is formulated as a multi-objective mixed-integer nonlinear fractional programming problem (MINFP) that is effectively solved by an optimization algorithm. This multi-objective optimization problem aims to minimize the unit life cycle environmental impacts with maximum unit net present value (NPV). Environmental assessment results show that the total greenhouse gas (GHG) emissions evaluated by the CLCA approach are 14.22 % lower than those assessed by the ALCA approach. By evaluating the ReCiPe end-point score, CLCA further reduces the total environmental impacts corresponding to particulate matter formation by 17.37 %.
format	article
author	Xiang Zhao Fengqi You
author_facet	Xiang Zhao Fengqi You
author_sort	Xiang Zhao
title	Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
title_short	Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
title_full	Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
title_fullStr	Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
title_full_unstemmed	Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective
title_sort	economic and environmental sustainability of waste plastics chemical recycling from the consequential perspective
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/dc7353d721bc458c86f5650d1c654e73
work_keys_str_mv	AT xiangzhao economicandenvironmentalsustainabilityofwasteplasticschemicalrecyclingfromtheconsequentialperspective AT fengqiyou economicandenvironmentalsustainabilityofwasteplasticschemicalrecyclingfromtheconsequentialperspective
_version_	1718426874382647296

Economic and Environmental Sustainability of Waste Plastics Chemical Recycling from the Consequential Perspective

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