A tool to guide the selection of impact categories for LCA studies by using the representativeness index

Antoine Esnouf, Reinout Heijungs, Gustave Coste, Éric Latrille, Jean Philippe Steyer, Arnaud Hélias

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Understanding the environmental profile of a product computed from the Life Cycle Assessment (LCA) framework is sometimes challenging due to the high number of environmental indicators involved. The objective here, in guiding interpretation of LCA results, is to highlight the importance of each impact category for each product alternative studied. For a given product, the proposed methodology identifies the impact categories that are worth focusing on, relatively to a whole set of products from the same cumulated database. The approach extends the analysis of Representativeness Indices (RI) developed by Esnouf et al. (2018). It proposes a new operational tool for calculating RIs at the level of impact categories for a Life Cycle Inventory (LCI) result. Impact categories and LCI results are defined as vectors within a standardized vector space and a procedure is proposed to treat issues coming from the correlation of impact category vectors belonging to the same Life Cycle Impact Assessment (LCIA) method. From the cumulated ecoinvent database, LCI results of the Chinese and the German electricity mixes illustrate the method. Relevant impact categories of the EU-standardized ILCD method are then identified. RI results from all products of a cumulated LCI database were therefore analysed to assess the main tendencies of the impact categories of the ILCD method. This operational approach can then significantly contribute to the interpretation of the LCA results by pointing to the specificities of the inventories analysed and for identifying the main representative impact categories.

LanguageEnglish
Pages768-776
Number of pages9
JournalScience of the Total Environment
Volume658
DOIs
Publication statusPublished - 25 Mar 2019

Fingerprint

Life cycle
life cycle
environmental indicator
index
assessment method
Vector spaces
electricity
Electricity
product
methodology
method

Keywords

  • Dimension reduction
  • Interpretation tools
  • LCA
  • Life Cycle Impact Assessment
  • Life Cycle Inventory
  • Representativeness

Cite this

Esnouf, Antoine ; Heijungs, Reinout ; Coste, Gustave ; Latrille, Éric ; Steyer, Jean Philippe ; Hélias, Arnaud. / A tool to guide the selection of impact categories for LCA studies by using the representativeness index. In: Science of the Total Environment. 2019 ; Vol. 658. pp. 768-776.
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A tool to guide the selection of impact categories for LCA studies by using the representativeness index. / Esnouf, Antoine; Heijungs, Reinout; Coste, Gustave; Latrille, Éric; Steyer, Jean Philippe; Hélias, Arnaud.

In: Science of the Total Environment, Vol. 658, 25.03.2019, p. 768-776.

Research output: Contribution to JournalArticleAcademicpeer-review

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