Proyecto UNITED CIRCLES

  • Project 101178798 — United Circles
  • Call: HORIZON-CL4-2024-TWIN-TRANSITION-01

United Circles: ‘Networked industrial-urban symbiosis value chain demonstrators for biomaterials, CDW, circular water loops & WWTPs, driven by Hubs 4 Circularity’, is the project in which 46 partners from 14 different countries and one international organisation come together to close the cycles of three industrial-urban symbiosis value chains: organic waste, urban wastewater and construction and demolition waste (CDW).

The main objective of United Circles is to accelerate progress towards a fully decarbonised future, where waste and water cycles are closed. The aim is to demonstrate the transformation of waste into new recycled products within 3 hubs of urban-industrial symbiosis:

  1. In Turkey, in the Ankara region: CDW will be turned into new buildings through 3D printing with low environmental impact.
  2. In Italy, in the Veneto region: used cooking oil and other organic waste will be transformed into new, fully biodegradable bioplastic products to replace fossil-based ones.
  3. In Spain, in Salamanca: energy and resource recovery from organic waste, wastewater and sludge and cellulose recovered from a sewage treatment plant.

Each of the demonstrators will in turn have a ‘mirror hub’, a demonstrator where the actions developed will be replicated by adapting the technologies to the situation in these countries. The mirror demonstrators are located in Hungary, Greece, the United Kingdom and South Africa.

In addition, several organisations from Slovenia, Lebanon, Austria and France are involved to support the formation of ‘seed demonstrators’, where the development of a network of stakeholders and interested parties is planned to start, in order to set up new demonstration nodes in the future.

Within the project, FCC Medio Ambiente focuses on the valorisation of waste streams for the recovery of nutrients and energy vectors. To this end, it will apply various recovery processes such as the biological methanation of various biogas streams for conversion into biomethane, the improvement of anaerobic digestion of waste streams to maximise the production of biogas at its waste treatment centres and the application of innovative technologies such as hydrothermal liquefaction (HTL) to obtain high-value products.

United Circles aims to achieve European and international cooperation for the creation of circular cities through urban-industrial symbiosis to reduce waste, starting with municipal waste, wastewater and construction and demolition waste. 

The project has been funded by the European Union under the Horizon Europe programme, with a total of €25,360,000, and starting November 2024 will run for 48 months.