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Write circular economy, read economy’s circularity. How to avoid going in circles

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Abstract

Enthusiasm for the Circular Economy (CE) is widespread and overwhelming. However, confusion around its meaning and purpose still pervades the scientific debate. Our study has two objectives. The first one is to increase the theoretical clarity and the scientific relevance of this debate. An important step forward in this direction is the idea of economy’s circularity, which we introduce following a critical re-visitation of CE’s notion. The second objective is to study the environmental effects of circularity. Our notion of economy’s circularity is theoretically rooted in the materials-energy balance model, and points to the presence of circular matter and energy flows in the economy. A major strength of this definition is the conceptual separation of circularity (as an economy’s feature) from the strategies (e.g. recovery, remanufacturing, reusing…) for its implementation. On one hand, this separation prompts the construction of a coherent framework, which helps shed light on the entire debate. On the other hand, it paves the way towards a novel methodology for studying any type of circularity effect. Circularity effects are indeed the effects of circularity strategies. Since strategies are constantly evolving, this approach delivers an immediate result. Circularity effects are unavoidably ambiguous. With reference to the effects on the environment, we provide evidence for this ambiguity by accurately selecting and reviewing studies on various circularity strategies. In a policy perspective, our findings seriously challenge the idea of implementing circularity for the sake of circularity. Indeed, using circularity as an environmental policy may prove quite a daunting task.

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Notes

  1. Because of these three features, we deem the notion of “economy’s circularity” theoretically preferable to the one of “circular economy”. From a terminological point of view, conceptual consistency would subsequently require dismissing the term “circular economy”. However, since we find this dismission nearly impossible at this point, we pragmatically accept the (terminologically) luckier term, yet with the caveats of the arguments put forward in this paper.

  2. Note that this equivalence does not contrast with the fact that higher circularity benefits from an overarching, systemic view. The realization of higher circularity in fact, passes in any case through a series of concrete projects with specific environmental effects.

  3. This is a cause for concern (in policy perspective) and a motivation for further research in this area.

  4. The authors do state their “intention to develop a representative sample of CE definitions” (Kirchherr et al. 2017, p. 222), but they disaffirm such intention a few lines thereafter. They conclude that their sample is “at least fairly representative [italics in original]” (Kirchherr et al. 2017, p. 222).

  5. These authors are for example, Mathews and Tan (2011), Wysokińska (2016), Sauvé et al. (2016), Geng and Doberstein (2008), Guo et al. (1997).

  6. The idea that loops can be closed is also regrettably present in authoritative policy documents (e.g. EC 2015; EIB 2017; OECD 2009).

  7. With regard to the materials-energy balance model, Pearce and Turner (1989) use two expressions (“circular economy” and “circular economic system”) to stress the circularity in the relationship between the economy and the environment. These terms stress the contrast with the case, in which scholars “ignore the environment” (Pearce and Turner 1989: 23), or they include it as a mere provider of natural resources. Pearce and Turner (1989) call this type of representation the “linear system”.

  8. The two broad categories of strategies for energy circularity correspondingly involve energy recovery from waste and energy recovery from energy waste streams, as in the case of kinetic energy recovery systems (e.g. Diaz-Elsayed et al. 2009) or waste heat recovery systems (e.g. Kurle et al. 2016).

  9. We use the expression “providing” in the sense of “making available” to underline that circularity does not always require a production process in narrow sense, as for example in the case of energy cascading.

  10. In view of the aim of the paper, we neglect here the resource-related interpretation.

  11. We incidentally observe that the topic of the “origins” of the CE concept is per se an issue in the CE debate. There are in fact authors (e.g. Geissdoerfer et al. 2017; Kirchherr et al. 2017; Merli et al. 2018; Reicke et al. 2018) who hold that the notion of CE has a long “history” (Winans et al. 2017: 825), and authors (e.g. Sauvé et al. 2016) who believe in the “novelty” of this concept. Many authors (e.g. Andersen 2007; Heshmati 2015; Ghisellini et al. 2016; Su et al. 2013; Guo et al. 1997; Geissdoerfer et al. 2017; Lewandowski 2016) for example, attribute the concept of circular economy to Pearce and Turner (1989), who use this wording with a completely different meaning (see note 7) or even to Boulding (1966), who does not even use the word “circular” in his paper. Some authors (e.g. Geissdoerfer et al. 2017) include the blue economy among “the most relevant theoretical influences” (Geissdoerfer et al. 2017: 759) for the CE while others (e.g. Winans et al. 2017) believe that Rachel Carson’s book “Silent Spring” has inspired the CE concept.

  12. As far as this can be an asset (see Kirchherr et al. 2017 on this point), our definition of circularity is much shorter than its CE counterparts.

  13. For an application of the notion of umbrella concept to the CE see for example, Blomsma and Brennan (2017) and Sacchi Homrich et al. (2018).

  14. We are not aware of other similar systematization exercises.

  15. Other examples of supporting strategies are among others, waste management, the “reclassification of the materials into ““technical” and “nutrients”” Ghisellini et al. (2016, p. 16) and the information campaigns aiming at increasing consumers’ responsibility for material use and waste.

  16. Although our visualization does not make it explicit, supporting initiatives clearly vary from strategy to strategy.

  17. According to Reike et al. (2018), there are (at least) 38 different types of strategies (and supporting actions) beginning with “re”.

  18. Yet, most authors (e.g. Ghisellini et al. 2016; Kirchherr et al. 2017; Su et al. 2013; Heshmati 2015) include reducing in the their CE discourse.

  19. Research in Municipal Solid Waste (MSW) incineration, for example, dates back the 70’s (Zhou et al. 2015).

  20. Very optimistically, Preston (2012) deems that “The remaining energy needed for a CE would be provided by renewable sources.” (Preston 2012: 3).

  21. In their survey, Wang et al. (2016) list 4348 studies since 2000.

  22. Damgaard et al. (2010), p. 1247.

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Acknowledgments

We thank the participants to the Sixth IAERE Annual Conference and to the SEBE Department Seminar of the University of Southern Denmark for valuable critique and encouragement. We are profoundly indebted to two anonymous referees for contributing thoughtful and constructive comments, which greatly improved the original manuscript.

Author contribution

The idea of this research and the structure of the paper are due to Jacopo Zotti, who wrote Sections 1–3 and 5, and contributed to Section 4. Andrea Bigano analysed the relevant literature, wrote Section 4, contributed to Section 5 and provided useful comments to the whole paper.

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Zotti, J., Bigano, A. Write circular economy, read economy’s circularity. How to avoid going in circles. Econ Polit 36, 629–652 (2019). https://doi.org/10.1007/s40888-019-00145-9

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