Carbonates from the pyrolysis of biochar have been used for various purposes for centuries – with the background of the CO2 problem, the topic is now a very topical issue again. Biochar has the potential to make a significant contribution against climate change.

biochar from germany


The term biochar comes from the combination of the use of biomass and increasing the carbon content through a thermal treatment step, e.g. pyrolysis. The coals therefore differ significantly from fossil coal due to the way they are formed. Biochar has been specifically produced for centuries and used for various purposes.

Biochar is an extremely environmentally friendly and promising product , with a rapidly increasing demand. Above all, the use as a soil additive, the climate-effective benefit for CO 2 sequestration (capture and storage) of atmospheric carbon dioxide, as a feed additive, in soil and water purification and as a nutrient store. Biochar from Cottbus (East Germany) – an overview of the positive features:


Biochar combines soil improvement and increase in soil fertility with the long-term binding of CO 2 and thus the reduction of greenhouse gases in the atmosphere.


Biochar has positive effects on groundwater and bodies of water by reducing the leaching of nutrients and fertilizers into the groundwater.


Biochar can reduce the CO 2 content in the atmosphere through long-term retention.


Biochar has very clearly positive effects on plant growth, especially in soils with insufficient soil properties; the increase in the harvest is 10% and higher.


Positive effects can also be determined in connection with (farm) animal husbandry. When using biochar, significantly fewer antibiotics are used; Biochar also binds moisture and pathogens away from the soil substrate and thus reduces the impact on the animals.

Under pyrolysis thermal decomposition of chemical compounds is to be understood at high temperatures. In this process, substances are heated to up to 1000 ° C with the exclusion of air and oxygen. Compared to gasification or carbonization, less organic matter is destroyed. CC and CH bonds of the starting compounds are predominantly retained, but in a modified structural composition, ie the long-chain and polymer-like molecules are broken down into shorter ones – a bond break is thus generated.

In the case of biomass containing lignocellulose, temperatures of at least 250 ° C are required to break up the structures. An important factor that influences the biochar produced during pyrolysis and its properties is time. The properties of the biochar produced during the pyrolysis process depend on the design of the pyrolysis reactor and the reaction parameters as well as the biomass and its particle size, shape, structure and pH value. The decisive reaction parameters are the temperature or heating rate, the residence time in the reactor, catalysts and the pressure.

➥ Metallurgy (production of metallic raw products)

➥ Iron and steel industry (base material)

➥ cement industry

➥ composting

➥ Repair of recultivation areas

➥ Agriculture

➥ litter

➥ Feed additive / animal feeding

➥ cascading use



➥ Recycling of municipal residues

➥ Promotion of regional agriculture

Forst und Landwirtschaft

Forestry & Agricultural Companies

➥ Increase in yield on cultivated areas

➥ Repair / upgrading of areas

➥ Organic tillage


Reclamation officer

➥ Repair of recultivation areas

➥ Increase in soil quality

➥ Increase in the possibilities for use

Build up of humus


Renovation of conversion areas

➥ Remediation by blowing in biochar as an alternative to conventional remediation


Industrial prospects

➥ Purchase of biochar for different purposes


Fertilizer manufacturer

➥ Increase in revenue through processing compost products

➥ Expansion of the product range