Circular economy (CE) has become fundamental in accelerating the efforts towards sustainability. CE was first proposed by Leontief in 1928, as way to understand causal relationships in the economic dimension. Recently, CE has mainly focused on environmental issues i.e. closing the material cycle through recovery (3Rs to 9Rs). Literature on this topic has increased over time and a number of bibliometric studies have been carried out. However, the majority of these studies used bibliometric indicators focusing on descriptive analyses of scientific outputs, particularly on yearly trend, keyword co-occurrence, and/or coauthorship.
This article adopts a combination of a nested approach, with grounded theory's constant comparative analysis as the overall analysis method and a bibliometric analysis within it. A total of 4,045 documents from CE during the period 1999–2019 were retrieved and analysed against an initial framework composed by different levels (economic issues, recovery and CE levels). The iterative process helped to improve the economic category, changing the level category into a scope one, and adding two new categories (scientific collaboration and themes). The results obtained were integrated to propose the holistic and panoptic framework for analysing circular economy for analysing circular economy, which consists of the integration and interconnection of three main components: (1) economy, with cost, productivity, distribution, value creation, and value added; (2) recovery loops from the 3Rs to the 9Rs; and (3) the scope of CE activities, including assessment, review, individual, organisation, process, sector, cluster, and country/region. In addition, assessment and review are transversal categories within scope.
This paper provides depth to the understanding of the economic, environmental and scope interlinkages of CE literature, so as to better position the CE theory and practice and to detect gaps that should be addressed. Moreover, the study highlights the importance for CE to achieve its potential in helping societies become more sustainable. Thus, theory and practice must take a holistic approach that integrates the economic and environmental dimensions, the scope of CE, and collaboration.
This research is linked to SDG12 Responsible Production and Consumption, 12.5 (By 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse); target 12.6 (Encourage companies, especially large and transnational companies, to adopt sustainable practices and to integrate sustainability information into their reporting cycle), and 12.a (Support developing countries to strengthen their scientific and technological capacity to move towards more sustainable patterns of consumption and production).
This study contributes to accelerating progress towards SDGs, as more research of CE is needed to examine how corporations can enhance their adaptive capacity, so they can meet sustainability and their company's needs in times of crisis.