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Correcting remaining truncations in hybrid life cycle assessment database compilation

Maxime Agez, Elliot Muller, Laure Patouillard, Carl‐Johan H. Södersten, Anders Arvesen, Manuele Margni, Réjean Samson and Guillaume Majeau-Bettez

Article (2022)

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Abstract

Hybrid life cycle assessment (HLCA) strives to combine process‐based life cycle assessment (PLCA) and environmentally extended input–output (EEIO) analysis to bridge gaps of both methodologies. The recent development of HLCA databases constitutes a major step forward in achieving complete system coverage. Nevertheless, current applications of HLCA still suffer from issues related to incompleteness of the inventory and data gaps: (1) hybridization without endogenizing the capital inputs of the EEIO database leads to underestimations, (2) the unreliability of price data hinders the application of streamlined HLCA for processes in some sectors, and (3) the sparse coverage of pollutants in multiregional EEIO databases limits the application of HLCA to a handful of impact categories. This paper aims at offering a methodology for tackling these issues in a streamlined manner and visualizing their effects on impact scores across an entire PLCA database and multiple impact categories. Data reconciliation algorithms are demonstrated on the PLCA database ecoinvent3.5 and the multiregional EEIO database EXIOBASE3. Instead of performing hybridization solely with annual product requirements, this hybridization approach incorporates endogenized capital requirements, demonstrates a novel hybridization methodology to bypass issues of price unavailability, estimates new pollutants to EXIOBASE3 environmental extensions, and thus yields improved inventories characterized in terms of 13 impact categories from the IMPACT World+ methodology. The effect of hybridization on the impact score of each process of ecoinvent3.5 varied from a few percentages to three‐fold increases, depending on the impact category and the process studied, displaying in which cases hybridization should be prioritized. This article met the requirements for a Gold—Gold JIE data openness badge described at http://jie.click/badges.

Uncontrolled Keywords

capital endogenization; ecoinvent; environmental extensions; EXIOBASE; IMPACT WORLD+; USEEIO;

Subjects: 1800 Chemical engineering > 1800 Chemical engineering
2700 Information technology > 2711 Database management
Department: Department of Chemical Engineering
Research Center: CIRAIG - International Reference Centre for the Life Cycle of Products, Processes and Services
Funders: Arcelor‐Mittal, Hydro‐Québec, LVMH, Michelin, Nestlé, Optel, Solvay, Total, Umicore
PolyPublie URL: https://publications.polymtl.ca/5619/
Journal Title: Journal of Industrial Ecology (vol. 26, no. 1)
Publisher: Wiley
DOI: 10.1111/jiec.13132
Official URL: https://doi.org/10.1111/jiec.13132
Date Deposited: 04 May 2021 17:58
Last Modified: 11 May 2023 05:15
Cite in APA 7: Agez, M., Muller, E., Patouillard, L., Södersten, C.‐J. H., Arvesen, A., Margni, M., Samson, R., & Majeau-Bettez, G. (2022). Correcting remaining truncations in hybrid life cycle assessment database compilation. Journal of Industrial Ecology, 26(1), 121-133. https://doi.org/10.1111/jiec.13132

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