Increased gas yields — more biogas through optimized processes
Step 3 of the BIOGASmax process
As most people are well aware, the biogas yield is a key parameter for economical operation of a biogas plant. It has a direct impact on the returns of the entire plant. In practice, there are more ways to increase biogas yields than many people think.
Higher biogas yields through treatment of coarse and long-fibered biomass
If a lot of coarse and long-fibered input materials are used, such as dung and long-fibered silage, biomass shredding helps to improve the biogas yield. Mechanical shredding increases the surface area of the material. Bacteria can reach the nutrients more easily and can convert them more effectively.
More biogas through disintegration
Many people have heard that disintegration can improve biogas production and often the methane level as well. But many are not sure exactly what this disintegration is and what options there are for achieving it.
Disintegration is a type of process optimization that involves various kinds of treatment of the biomass, all of which aim to make it easier for bacteria to access nutrients, in order to boost biogas production. This treatment may be mechanical shredding and/or enlarging of the biomass surface area by cutting the biomass up, grinding it, or mashing it, as in the DisRuptor.
Advanced liquid feeding for efficient infeed of solid matter—also for alternative biomass
Solid matter feeding presents another opportunity for improving the biogas yield. The results of the EU research project EU-AGRO-BIOGAS show a higher specific and absolute biogas yield when solid matter is fed in as a liquid rather than dry. Feeding the solids into the digester in a well mashed form makes them easily accessible for bacteria, prevents crusting and settling, and lowers the viscosity of the organic suspension. This ensures more thorough mixing of the digester content and facilitates outgassing. The biomass is utilized more effectively, which increases the specific biogas yield.
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