Biochar from coffee husks - first trials successful

17.02.2023

Within the ETH-Soil project, agricultural or forestry residues are to be used as feedstock for biochar production. In Ethiopia, coffee husks are produced in large quantities as residual material during coffee production and are currently not used due to their properties. Initial experiments at the DBFZ have shown, that the selected process is generally suitable for producing biochar from coffee husks. The biochar produced meet the European EBC-Agro criteria for soil application regarding the PAH content. In the further course, the production process will be further developed and optimized with a special focus on air pollutants. Picture: © Dennis Krüger