Biochar in the biogas plant
Biochar can significantly improve the biogas yield, as proven by several international studies. One reason for this is the nature of biochar: Due to its porous structure and large surface area, it binds impurities and thus stabilises the biogas process. In addition, the substrates in the fermenter can be broken down more effectively because the microorganisms in the plant coal matrix are better protected.
Biochar also has a number of advantages for the biogas process when it comes to climate protection. If plant coal is added to the fermentation residue, nutrient losses and climate-damaging methane gas losses are reduced. If the fermentation residue is carbonised, high-quality biochar can be produced from it and the carbon contained in the fermentation residue is bound over the long term. This not only protects the environment, but also ensures substantially improved efficiency of the gas production process.
Recent contributions on the subject of biogas
Already today, almost 70 % of renewable energies in Germany are generated from biomass. However, at around 300 g CO2 / kWh, electricity from biogas from conventional corn monocultures is only slightly better than the conversion of fossil…
Various international studies prove an increased gas yield through the addition of biochar to the biogas process. With approx. 9,200 biogas plants (Statista 2018), Germany in particular offers great potential for optimisation. The study investigates which…
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