Biogas - What is it?
Significance for the energy turnaround!
Biogas is an energy-rich gas mixture that is produced during the natural decomposition of organic material in the absence of air. This decomposition process is technically used in biogas plants to produce biogas from liquid manure, organic waste or Energiepﬂanzen. The substrates are fermented in hermetically sealed fermenters. This requires the work of many different microorganisms.
The most important component of biogas is combustible methane (CH4). Depending on the substrates used, the methane content varies between 50 and 65%. In addition, carbon dioxide (CO2) occurs in a proportion of 35 to 50 % and other constituents such as nitrogen, water, oxygen and hydrogen sulphide in low concentrations.
Biogas can be converted into electricity, heat, gas or fuel. The fermentation product leaves behind a high-quality fertiliser, rich in humus-forming substances and nutrients. They are used in liquid or dried form in agriculture, landscaping and horticulture as well as in private gardens as an organic fertiliser or soil conditioner.
The fermentation product contains the nutrients contained in the initial substrates such as nitrogen, phosphorus, potassium and organic carbon. Thus, the use of fermentation products closes the natural nutrient and humus cycle and replaces mineral fertiliser, which would otherwise have to be produced with high energy.
German Biogas Association
The German Biogas Association (Fachverband Biogas e. V.) unites operators, manufacturers and planners of biogas plants, representatives from science and research as well as interested parties from all over Germany. It advocates the increased use of biogas technology through intensive political representation of interests at federal and state level.
Renewable Energies e.V.
The Agency for Renewable Energies e. V. (AEE) is working to persuade people to turn their energy systems around. We present the opportunities and advantages of a sustainable energy supply and promote greater acceptance within society.