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Process-oriented life cycle assessment modelling in EASETECH
Concetta Lodato1, Bahram Zarrin2, Anders Damgaard1
1Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet, 115 2800 Kgs, Lyngby, Denmark.
Waste Management (New York, N.Y.)
|May 3, 2021
Summary
This study introduces novel life cycle assessment (LCA) modeling features for circular economy technologies, improving accuracy in resource-related assessments. The enhanced approach better reflects material recirculation and complex process interactions in waste management systems.
Area of Science:
- Environmental Science
- Chemical Engineering
- Industrial Ecology
Background:
- Life cycle assessment (LCA) modeling faces challenges with circular economy principles like material recirculation and transformations.
- Existing LCA models often neglect non-linear responses and interconnections between physical flows in resource-related technologies.
- Accurate environmental performance assessment of waste management and bioeconomy systems requires advanced modeling capabilities.
Purpose of the Study:
- To introduce four novel LCA modeling features for enhanced representation of resource-related technologies.
- To address limitations in current LCA by incorporating material recirculation and complex flow dynamics.
- To improve the accuracy and interpretability of LCA for circular economy and waste management applications.
Main Methods:
- Developed four new LCA modeling features: flow mixing/redefinition, substance recirculation, background-to-foreground process integration, and conditional sequence flows.
- Expanded the EASETECH LCA software tool with a "process editor" (EASETECH+) to implement these features.
- Applied the enhanced modeling approach in a case study of anaerobic digestion of organic household waste.
Main Results:
- The novel LCA modeling features, including recirculation and conditional flows, significantly impacted results and interpretation.
- Integration of physical flows from background to foreground processes provided a more holistic system view.
- The enhanced process-oriented LCA modeling demonstrated critical new insights into environmental performance.
Conclusions:
- The developed LCA modeling features offer a more robust framework for assessing circular economy and waste management technologies.
- Process-oriented LCA, incorporating recirculation and complex flow dynamics, is crucial for accurate environmental performance evaluation.
- The EASETECH+ expansion provides a practical tool for implementing these advanced LCA modeling capabilities.
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