From 24 to 25 June, cities across Europe gathered in Zaragoza. They visited the new biorefinery built by Urbaser. This facility is part of the EU-funded Circular Biocarbon project. It demonstrates how organic waste can become valuable materials through advanced biorefinery technology.
Representatives from Warsaw, Poland; Bornholm, Denmark; and Mikkeli, Finland attended the event in person. This was the first in-person meeting of the Circular Biocarbon City Interest Group.
The event focused on turning urban waste streams into resources. The goal is to support circularity, innovation, and climate neutrality across Europe.
During the visit, participants learned that after just six months, the biorefinery is refining biogas into ultra-pure methane and carbon dioxide. Both gases have over 98% purity.
The programme included a tour of Urbaser’s biorefinery and the Alfonso Maíllo Innovation Center. Attendees saw how organic waste is broken down into key components, mainly methane and carbon.
On the second day, participants observed Zaragoza’s waste collection and street cleaning systems. They also heard from the REDOL project, which aims to make Zaragoza a hub for circular economy initiatives.
Workshops explored how to expand high-tech biorefineries in more European cities. Participants emphasized the importance of public procurement and local support. Community and political backing are crucial for success.
Sustainability benefits should go hand in hand with local job creation. The Zaragoza visit is the first in a series of study trips planned for the City Interest Group.
The event was organized by ICLEI Europe. Urbaser and Zaragoza supported the event by showcasing their efforts in sustainable waste management. This initiative aims to promote more circular waste practices across Europe.
