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Open AccessArticle

A Framework for Implementing and Tracking Circular Economy in Cities: The Case of Porto

Unit of Energy Systems Analysis (dESA), KTH Royal Institute of Technology, Brinellvägen 68, SE-100 44 Stockholm, Sweden
Payne Institute, Colorado School of Mines, Golden, CO 80401, USA
Author to whom correspondence should be addressed.
Sustainability 2019, 11(6), 1813;
Received: 28 January 2019 / Revised: 15 March 2019 / Accepted: 16 March 2019 / Published: 26 March 2019
(This article belongs to the Special Issue Circular Economy, Ethical Funds, and Engineering Projects)
Circular economy (CE) is an emerging concept that contrasts the linear economic system. This concept is particularly relevant for cities, currently hosting approximately 50% of the world’s population. Research gaps in the analysis and implementation of circular economy in cities are a significant barrier to its implementation. This paper presents a multi-sectorial and macro-meso level framework to monitor (and set goals for) circular economy implementation in cities. Based on literature and case studies, it encompasses CE key concepts, such as flexibility, modularity, and transparency. It is structured to include all sectors in which circular economy could be adopted in a city. The framework is then tested in Porto, Portugal, monitoring the circularity of the city and considering its different sectors. View Full-Text
Keywords: circular economy; urbanization; framework; indicators; circular city circular economy; urbanization; framework; indicators; circular city
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Cavaleiro de Ferreira, A.; Fuso-Nerini, F. A Framework for Implementing and Tracking Circular Economy in Cities: The Case of Porto. Sustainability 2019, 11, 1813.

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