AshCycle – Integration of underutilized ashes into material cycles by industry-urban symbiosis

Međunarodni projekt • Aktivan projekt

Project duration: 1.6.2022.-31.5.2026.

Project code: 101058162

Link to the external project page:

Project lead:

Department project lead:
Department of Materials

Department(s) at the Faculty:
Department of Hydroscience and Engineering
Department of Materials

Project manager at the Faculty:
prof. Nina Štirmer

Lead institution:
University of Oulu


Technical University of Delft (TUDelft)
University of Zagreb Faculty of Civil Engineering (UNIZG)
Ghent University (UGent)
Zavod za gradbenistvo Slovenije (ZAG)
Technical University of Denmark (DTU)
BioSO4 Oy (BioSO4)
Oulun Energia (OEnerg)
Oulun jätehuolto Oy (Kierto)
AI4Value Oy (A4V)
Beton Lučko (BL)
GTF-Initiative for Sustainable Growth (GTF)
Kleener Power Solutions Oy (Kleener)
ResourceFull (RSF)
SECO Belgium (SECO)
Orbix Solutions (Orbix)
University of Johannesburg (UJ)
Veolia nv-sa (Veolia)
CWare APS (CWare)
NEXE ltd. (NEXE)
Sustainable Living (NH)
Mineralz B.V (MRZ)
Haitsma Beton B.V (Haitsma)
Danske Tegl (DT)
ARC I/S Amager Ressourcecenter (ARC)
ETH Zürich (ETH)


Ivana Carević
Marijana Serdar
Martina Grubor
Jelena Šantek Bajto
Ivana Banjad Pečur
Dražen Vouk
Ivan Gabrijel


Source of funding:


The incineration of biomass, municipal solid waste and sewage sludge produces significant quantities of ashes in the EU: approximately 25 million tons annually. These residues currently have no use or they are utilized only in low-value applications. Significant problems with the use of incineration residues in construction, water treatment, and other industries are insufficient public awareness of the safety and environmental acceptability of the final products, the lack of uniform regulations, and the readiness of the market to accept incineration residues as supplementary material. The project AshCycle will demonstrate and implement industry-urban symbioses revolving around the underutilized ashes to reach a circular and climate-neutral economy in Europe. Pilots and replication demonstrations will be carried out in Denmark, Finland, Belgium, The Netherlands, Croatia, Slovenia, Switzerland, and South Africa. The symbioses will include all major actors from the value chains, namely ash providers, ash beneficiation handlers, concrete and adsorbent product providers, as well as the engagement of the general public. AshCycle answers unmet socio-economic demands, facilitates emerging ash-based circular products for market entry and unlocks benefits for society by accepting new circular concepts.