Communication Dans Un Congrès Année : 2025

Coupling LCA And Dynamic MFA: A Literature Analysis

Résumé

A combined implementation of Life Cycle Assessment (LCA) and Material Flow Analysis (MFA) is needed to represent a system with its flows, stocks and their related transition dynamics and also assess environmental impacts related to system’s flows with a full LC perspective at different scales: production line, company, territory, etc. However, this coupling is subject to several methodological issues that first need to be overcame: LCA of products (which is the traditional LCA, and will be referred as LCA hereafter) and MFA don’t have the same scopes, implying different system boundaries. While MFA has a wide view on a system with all related products implied in the studied territory, LCA focuses on a unique product (i.e. the reference flow) around which the system is built, also taking into account processes that took place outside the studied territory but implied in the LC. As a consequence, links between coproducts have been cut, or substituted, in LCA databases, preventing from considering an industrial process entirely. Based on that assumption, the traditional LCA calculation routine has been built on the basis of matrix inversion (Heijungs and Suh, 2002). The representation of the problem in the form of matrices provides a concise formulation, but restricts to square technological matrices (to be inversible), and so is unable to consider multioutput processes. Taking temporality into consideration is necessary when transition scenarios are considered. The evolution of flows and stocks of material across the time are considered in dynamic MFA, but stocks are completely absent in LCA. As some couplings have already been led (Barkhausen et al., 2023), a bibliographic review will be presented to position those issues in the literature and identify if they are addressed and how to properly couple LCA and MFA in a context of territorial transition. Heijungs, Reinout, et Sangwon Suh. The Computational Structure of Life Cycle Assessment. Vol. 11. Eco-Efficiency in Industry and Science. Dordrecht: Springer Netherlands, 2002. https://doi.org/10.1007/978-94-015-9900-9. Barkhausen, Robin, Leon Rostek, Zoe Chunyu Miao, et Vanessa Zeller. « Combinations of Material Flow Analysis and Life Cycle Assessment and Their Applicability to Assess Circular Economy Requirements in EU Product Regulations. A Systematic Literature Review ». Journal of Cleaner Production 407 (juin 2023): 137017. https://doi.org/10.1016/j.jclepro.2023.137017.

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Dates et versions

hal-05176732 , version 1 (22-07-2025)
hal-05176732 , version 2 (23-09-2025)

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  • HAL Id : hal-05176732 , version 2

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Alexis Boutin, Anne Ventura, Franck Michaud, Cyrille François. Coupling LCA And Dynamic MFA: A Literature Analysis. LCM 2025, Sep 2025, Palermo, Italy. ⟨hal-05176732v2⟩
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