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A life cycle assessment framework for large-scale changes in material circularity.

Susanna Andreasi Bassi1, Davide Tonini2, Tomas Ekvall3

  • 1Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet, Bygning 115, DK-2800 Kgs. Lyngby, Denmark; European Commission, Joint Research Centre, Edificio Expo, Calle Inca Garcilaso 3, 41092 Seville, Spain.

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Summary
This summary is machine-generated.

Developing a new framework for life cycle assessment (LCA) helps model material circularity policies. Ignoring market responses and saturation overestimates environmental benefits, requiring supplementary initiatives for full impact.

Keywords:
Circular economyEnvironmental assessmentPET traysPolicy targetsRecycling

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Area of Science:

  • Environmental Science
  • Sustainability Science
  • Policy Analysis

Background:

  • European Union policy prioritizes material circularity to decouple environmental impact from economic growth.
  • Life Cycle Assessment (LCA) is crucial for quantifying environmental impacts but faces challenges in modeling large-scale policy-driven changes.
  • Consistent LCA modeling for targets like recycled content and recycling rates requires a refined approach.

Purpose of the Study:

  • To propose a novel assessment framework for Life Cycle Assessment (LCA) that addresses large-scale changes from material circularity policies.
  • To integrate regulatory and economic aspects into LCA to accurately model system responses.
  • To provide a methodological improvement for evaluating the environmental benefits of circular economy policies.

Main Methods:

  • Development of an assessment framework for LCA, focusing on goal definition, functional unit, scenario definition, and system response modeling.
  • Emphasis on incorporating regulatory and economic factors such as consumption trends, market dynamics, and waste management policies.
  • Application of the framework using a case study of a 70% recycled content policy for PET trays in the EU27+1 by 2025.

Main Results:

  • The proposed framework effectively models system-wide consequences of circularity policies.
  • Neglecting market responses and saturation leads to an overestimation of environmental benefits.
  • The case study demonstrated that supplementary initiatives are necessary to achieve full system-level environmental benefits.

Conclusions:

  • Accurate LCA modeling of material circularity policies requires integrating market dynamics and potential saturation effects.
  • The developed framework offers a more realistic assessment of environmental benefits from circular economy interventions.
  • Policy implementation for material circularity necessitates a holistic approach, considering market feedback and complementary measures.