Maxime Agez, Guillaume Majeau-Bettez, Manuele Margni
, Anders H. Strømman et Réjean Samson
Article de revue (2020)
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Libre accès au plein texte de ce document Version officielle de l'éditeur Conditions d'utilisation: Creative Commons: Attribution (CC BY) Télécharger (1MB) |
Abstract
Life cycle assessment (LCA) and environmentally extended input–output analyses (EEIOA) are two techniques commonly used to assess environmental impacts of an activity/product. Their strengths and weaknesses are complementary, and they are thus regularly combined to obtain hybrid LCAs. A number of approaches in hybrid LCA exist, which leads to different results. One of the differences is the method used to ensure that mixed LCA and EEIOA data do not overlap, which is referred to as correction for double counting. This aspect of hybrid LCA is often ignored in reports of hybrid assessments and no comprehensive study has been carried out on it. This article strives to list, compare, and analyze the different existing methods for the correction of double counting. We first harmonize the definitions of the existing correction methods and express them in a common notation, before introducing a streamlined variant. We then compare their respective assumptions and limitations. We discuss the loss of specific information regarding the studied activity/product and the loss of coherent financial representation caused by some of the correction methods. This analysis clarifies which techniques are most applicable to different tasks, from hybridizing individual LCA processes to integrating complete databases. We finally conclude by giving recommendations for future hybrid analyses.
Mots clés
Data quality; Environmental input–output analysis; Hybrid life‐cycle assessment; Industrial ecology; Life cycle assessment (LCA); Life cycle inventory (LCI)
Sujet(s): |
1500 Génie de l'environnement > 1500 Génie de l'environnement 1600 Génie industriel > 1600 Génie industriel 1600 Génie industriel > 1602 Systèmes d'information de gestion |
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Département: |
Département de génie chimique Département de mathématiques et de génie industriel |
Centre de recherche: | CIRAIG - Centre international de référence sur le cycle de vie des produits, procédés et services |
Organismes subventionnaires: | International Chair in Life Cycle Assessment |
URL de PolyPublie: | https://publications.polymtl.ca/5490/ |
Titre de la revue: | Journal of Industrial Ecology (vol. 24, no 3) |
Maison d'édition: | Wiley |
DOI: | 10.1111/jiec.12945 |
URL officielle: | https://doi.org/10.1111/jiec.12945 |
Date du dépôt: | 13 nov. 2020 12:16 |
Dernière modification: | 27 sept. 2024 04:14 |
Citer en APA 7: | Agez, M., Majeau-Bettez, G., Margni, M., Strømman, A. H., & Samson, R. (2020). Lifting the veil on the correction of double counting incidents in hybrid life cycle assessment. Journal of Industrial Ecology, 24(3), 517-533. https://doi.org/10.1111/jiec.12945 |
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