SummaryIn this article, we use Hirsch and Levin's notion of umbrella concepts as an analytical lens, in order to articulate the valuable catalytic function the circular economy (CE) concept could perform in the waste and resource management debate. We realize this goal by anchoring the CE concept in this broader debate through a narrative approach. This leads to the insight that whereas the various resource strategies grouped under the CE's banner are not new individually, the concept offers a new framing of these strategies by drawing attention to their capacity of prolonging resource use as well as to the relationship between these strategies. As such, the CE offers a new perspective on waste and resource management and provides a new cognitive unit and discursive space for debate. We conclude by discussing research opportunities for the industrial ecology (IE) community relating to the concept's theoretical development and its implementation. Specifically, we pose that reinvigorating and growing the social science aspects of IE is required for both. After all, it is in understanding and facilitating the collective implementation of any idea, also the CE concept, that the potential lies for shaping our material future.
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This paper draws on material entropy and life cycle thinking to develop the Resource States framework. This framework clarifies and systematises the language around resources within the circular economy (CE) discourse, such that insights from different tools and approaches that investigate different aspects of CE can be aggregated and a more comprehensive picture of complex circular systems can be compiled. Currently, progress of the CE discourse is hampered by a lack of a clear and systematic approach to what we refer to as the particles state and the products state. That is: whether to approach resource circulation from the perspective of elements, molecules or materials; or whether to adopt the perspective of products or finished goods. As these two perspectives are often implicit in current contributions to CE, we first articulate both approaches, before assessing their respective contributions and limitations. Next, we draw on material entropy and life cycle thinking to integrate both perspectives and develop a more comprehensive way of conceptualising resource states, in the form of the Resource States framework. We furthermore present how this framework can be used A) to clearly distinguish between circular strategies, as well as between different implementation scenarios of the same circular strategy; B) to systematically explore and map synergies and trade-offs between combinations of circular strategies; and C) to link circular strategies with structural waste present in a given context. Lastly, we discuss the strengths and weaknesses of the framework and reflect on how it advances the CE field.
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