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Circular economy of urban carbon flows through innovative bio-waste recovery pathways.

As part of the SDG graduate program CirCles, the potentials of innovative recycling paths for urban biowaste are being investigated in collaboration with the departments of Sustainable Marketing, Resource Management and Waste Technology as well as Grassland Science and Renewable Resources. The inter- and transdisciplinary project aims to close urban carbon cycles by providing biowaste free of foreign matter, processing it in a targeted manner and recycling it sustainably.

Currently, activated carbons based on hard coal or coconut are mainly used for the targeted removal of organic trace substances from wastewater matrices. At the Department of Grassland Science and Renewable Resources, the suitability of urban biowaste as a raw material for the production of activated carbons is being investigated within the framework of CirCles. The focus is on a targeted processing of biowaste for activated carbon production and the development of adapted pyrolysis and activation profiles for the production of high-quality biogenic activated carbons for wastewater treatment.

Project information

Project partner:

Department of Urban Water Management

Department of Sustainable Marketing

Department of Resource Management and Waste Technology

Department of Grassland Science and Renewable Resources

Associated partners:

Stadtreiniger Kassel

Waste Disposal District Kassel


Environment and Garden Department of the City of Kassel

Sponsored by

University of Kassel within the framework of the SDG Graduate Program

Duration: July 2022 - December 2025

Further information

Contact person:

Dr.-Ing. Korbinian Kaetzl

M.Sc. Klara Bretschneider