Hochschule für nachhaltige Entwicklung Eberswalde

Joined Research Project Biochar Brandenburg

Utilization of biochar from hydrothermal carbonization as a soil additive for the establishment of fast growing tree species



Hydrothermal carbonization (HTC) is a young and innovative field of science in Brandenburg, which originated from the basic research group around Mr. Antonietti (Max Planck Institut Potsdam). The principle is related to the natural process of coalification, where coal develops under pressure, increased temperatures and anaerobic conditions from biomass.

The HTC method requires only basic equipment: a pressure vessel, where organic matter, water and a catalyst are heated for about 12 hours at 180 degrees under anaerobic conditions. The end products are biochar and a liquid phase. Besides carbon, the end product also contains all other recyclables stored in biomass, like nutrients and water. The conversion process of biomass to biochar has a carbon efficiency of nearly 100 percent, which means that almost all of the carbon of the raw material is stored in the biochar and does not escape as a greenhouse gas.

Biochar can be used as fuel or raw material for further products. Another possibility is its use for soil melioration, since it is composed of persistent carbon fractions with a large surface and high porosity, which, in long term, are able to improve the water and nutrient storing capacity of the soil.

When brought into the soil, biochar prevents the emissions of CO2 which would occur when uncharred organic matter is decomposed, due to its higher resistance against decomposition in soil. By thus fixing CO2 in the soil it is possible to withdraw carbon from the atmosphere. This results not only in a CO2-neutral but even CO2-negative process, which is an attractive alternative to the Carbon Capture and Storage procedure and offers new opportunities in climate protection.

Project Goals

    The applicability of biochar as a soil additive for the establishment of fast growing tree species in short rotation will be reviewed.

    By combining the innovative field of knowledge of HTC with the cultivation of fast growing tree species a contribution to climate protection and sustainable development of rural areas is made by carbon sequestration and valorization of low-yield soils.

    On marginal sites that have been revalued with biochar, biomass for energetic use can be produced without being in competition with food production.

    An interdisciplinary oriented network "biochar Brandenburg" will be established which includes universities, research institutions and enterprises, public institutions and industry as its partners to strengthen research skills and knowledge and to ensure practical relevance.


    Potential analysis of suitable raw material in the region for hydrothermal carbonization

    Identification of usable agricultural fallow sites for valorization by energy wood production with use of biochar in Brandenburg

    Production and optimization of biochar as soil additive from the raw materials (Max-Planck-Institut Potsdam)

    Testing of produced biochar as soil additive in relation to water and nutrient storage capacity

    Planting trials with fast-growing tree species on existing experimental plots of BIODEM and other sites

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    Project partner

    Max-Planck-Institut fĂŒr Kolloid- und GrenzflĂ€chenforschung
    Palaterra GmbH & Co. KG
    Addlogic Labs GmbH
    Carbon Solutions Deutschland GmbH
    Investor Center Uckermark GmbH
    Nationalpark Unteres Odertal


    HNE Eberswalde. Hochschule fĂŒr nachhaltige Entwicklung Eberswalde
    University of Applied Sciences
    Alfred-Möller Str. 1
    16225 Eberswalde

    Prof. Dr. Dieter Murach
    Project Leader
    Tel: +49 (0) 3334 / 65418

    B.Sc. Eva-Maria Roth
    Project Coordinator
    Tel: +49 (0) 3334 / 65466


    Investition in Ihre Zukunft


    EUROPÄISCHE UNION EuropĂ€ischer Sozialfonds


    Ministerium fĂŒr Wissenschaft Forschung und Kultur

    Supported by the Ministry of Science, Research and Culture from funds of the European Social Fonds and Brandenburg