Search for: All records

Growing in popularity, the circular city framework is at the leading-edge of a larger and older transitional dialogue which envisions regenerative, circular, and symbiotic systems as the future of urban sustainability. The need for more research supporting the implementation of such concepts has been often noted in literature. To help address this gap, this holistic review assesses a range of pertinent sustainability frameworks as a platform to identify actionable strategies which can be leveraged to support and implement circular city goals. This assessment is grounded in a holistic overview of related frameworks across interdisciplinary and scalar domains including circular city, the food-water-energy nexus, circular economy, bioeconomy, industrial symbiosis, regenerative design, and others. Building on these interrelationships, the applied strategies espoused within these publications are synthesized and assessed in the context of circular city implementation. From an initial 250 strategies identified in literature, thirty-four general implementation strategies across six thematic areas are distinguished and discussed, finding strong overlaps in implementation strategies between frameworks, and opportunities to further develop and harness these synergies to advance circular city toward sustainable urban futures. 

By 2050, two-thirds of the world’s population will live in cities and consume 80% of the global food supply. As the changing climate exacerbates pressure on all sectors of the economy, new frameworks for resource management in urban areas have been introduced. The food-waterenergy nexus and the circular economy are two prominent examples; these conceptual frameworks recognize that resources consumed by cities are finite and intricately interdependent. In alignment with these ideas, professionals in the built environments shoulder a significant responsibility to design future buildings, neighborhoods, and cities that can sustain themselves while exerting minimal impact on the surrounding environment. The supply and consumption of food, water, and energy in future cities have, therefore become an architectural problem - and an opportunity for designers to contribute to a more significant societal shift.

 

Energy use within buildings contributes to nearly a third of carbon emissions in the United States (Zhang et al. 2019, EPA). Meanwhile, between 30-40% of food in the U.S. is wasted and generates carbon emissions equivalent to that of 37 million cars yearly (UN FAO). Long term decarbonization strategies within the built environment can look to alternative energy mechanisms which redirect waste resources as inputs to other systems. Circular City models of sustainability accordingly look for potentials to close loops, turning waste into resources and reducing pollution. These approaches are generating increasing interest and seek to advance a very applied approach to sustainability- one which will integrally require leadership from design fields, local governments, and community leadership to succeed.

 

This research collaboration between the Circular City + Living Systems (CCLS) research lab and the architecture practice Weber Thompson addresses the intersection of three critical topics affecting the carbon footprint of the built environment: adaptive reuse of existing buildings, increased availability of electric and autonomous vehicles, and food production in cities. This study measures and compares the relative impact of the operational carbon impact reduction of an eventual transition to electric autonomous vehicles, the embodied carbon reduction of adaptive building reuse, and the potential to sequester carbon as a benefit from living systems in urban aquaponics operations in adapted parking garages.