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VCI-S-1000 Removal


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What is Biochar?

Biochar is a very heterogeneous product depending on the organic input material, the temperature during pyrolysis, and the post-treatment. LUCRAT GmbH has conducted intensive research in close cooperation with universities, the German Biomass Research Center, and the Robert Boyle Institute to find out which biochar is suitable for which purpose. In the present case, it is the application of specific biochar with EBC certification in the biogas process.

The biochar is pyrolyzed exclusively from hardwoods, particularly from beech at high temperatures. In this way, the carbon is particularly well fixated, and at the same time, the capillary structure of the biochar is preserved. In the biogas process, biochar is used to reduce the addition of toxic trace elements such as cadmium or molybdenum, but above all, to homogenize the process biology and make it less sensitive to harmful influences.

The Process

After the biochar has been used in the fermenter, it runs as a by-product stream and ends up in the so-called digestate. Based on German legislation, this is inevitably incorporated into arable land so that biochar represents a permanent carbon sink. However, the effect of biochar does not end at this point. Rather, in addition to the pure sink, numerous other added values are associated with the product. For example, the Biochar stores water, resulting in a more reliable crop yield during dry phases, the Biochar provides nutrients in the immediate root zone and helps the additional humus formation in the soil. In addition, biochar reduces the need for fertilization with mineral products (nitrogen, phosphorus, and potassium).

The carbon credits available here were traded by LUCRAT GmbH and used exclusively in Lower Saxony (Germany) in the biogas industry and subsequently brought into the soil in the immediate vicinity of the plants. The documentation for each ton of CO2eq will be specific in amount and cradle-to-grave way of using the biochar.

VCI-S-1000 Removal

Location: Lower Saxony, Germany

Project executor: Bioenergy Dieckmann eG, 38350 Helmstedt
Time: 2022
Type: Long-term carbon sequestration in biochar

When burned or decomposed, plant residues release the CO2 they have bound. However, if plant residues are converted into plant charcoal in a pyrolysis process, a large proportion of the CO2 is bound in the Biochar. Once this Biochar is spread on a field and incorporated into the soil, it is stable in the soil for over 1,000 years.