Assessing the Potential of Biodegradable Plastics in a Circular Economy: A Methodological Outlook

Quinten Scheers (), Philippe Nimmegeers (), Or Galant (), Sabrina Spatari (), Niko Brande (), Joost Brancart () and Pieter Billen ()
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Quinten Scheers: University of Antwerp
Philippe Nimmegeers: University of Antwerp
Or Galant: Technion– Israel Institute of Technology
Sabrina Spatari: Technion– Israel Institute of Technology
Niko Brande: Vrije Universiteit Brussel
Joost Brancart: Vrije Universiteit Brussel
Pieter Billen: University of Antwerp

Circular Economy and Sustainability, 2025, vol. 5, issue 2, 1291-1305

Abstract: Abstract Increased biodegradability, in other words reduced environmental recalcitrance, has the potential to be an important asset in the battle against plastics pollution. It can partially mitigate global plastic leakages into the environment, which is next to their impact on climate change the biggest concern regarding plastics use. Biodegradation should be regarded as an optimal safety net in many applications and should often not be the targeted waste management option for biodegradable plastics. Biodegradability should not preclude reuse or proper recyclability, which are impactful means to reduce the carbon intensity of plastics lifecycles. Despite the added advantages, the market penetration of biodegradable plastics is only very slowly growing. Moreover, policy recommends its use only in limited applications, driven by sometimes-higher cost and limited recyclability. In this article, we posit that arguments against widespread application of biodegradable plastics are largely driven by misperceptions arising from intrinsic limitations of contemporary sustainability assessments and offer an alternative viewpoint that could compensate for this. In general, sustainability assessments fail to properly assess learning curves, often do not take littering potential into account, and are rather conservative with respect to background systems. Hence, recyclability– or better: circularity– judgements often do not resolve the paradoxical situation in which increased market shares lead to easier and more profitable recycling schemes and vice versa. Judging disruptive innovations by incorporating thermodynamics-inspired, less data-intensive, state-based methods, based on, e.g., statistical entropy analysis, into the decision support framework could allow to forecast packaging markets with performant materials that are intrinsically circular, having reduced environmental recalcitrance.

Keywords: Biodegradable Plastics; Sustainability Assessments; Statistical Entropy; Decision Making (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s43615-024-00476-1

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