EMMA

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In the EMMA project CCS and FHM integrate several newly developed fermentation processes that improve the efficiency and applicability of fermentation. The process begins with the accumulation of residues. Solid parts enter the hydrolysis reactor (degradation of large carbon structures such as celluloses and proteins), where fatty acids and hydrogen are produced under op-timal conditions. The liquid parts from the separation process enter a fixed bed rotting container with dissolved sugars, proteins and fats. Proteins and fats from these sugars are quickly transformed into biogas (methane and carbon dioxide). The fatty acids from the hydrolysis reactor are also converted into biogas in this reactor. Finally, the produced hydrogen gas is injected into the solid bed rotary tank, so that the methanisation (transformation of hydrogen and carbon dioxide into methane) produces a larger part of the methane in the biogas. The system works as an integrated whole. However, it also offers the possibility to use the intermediate products such as fatty acids and hydrogen for direct application. The system becomes more complex by the use of several reactors and different flows. This has a cost-increasing effect. This can be compensated by increased efficiency (more biogas per biomass input) and a significant reduction in reactor volume, as the processes are more concentrated (hydrolysis) or faster (fixed bed rotting).

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