Biogaspotentialen av matavfall sorterat ur hushållsavfall.
To achieve the Government's milestones for 2018, which means that 50 % of food waste shall be separated from household waste and undergo biological treatment (composting or anaerobic digestion). Hultsfred, Högsby and Vimmerby are three adjacent municipalities of Kalmar, county Småland. During 2012 and 2013 analyzes were performed on their household waste to determine its composition. The household waste is currently collected in one fraction. The work, examines how much food waste the household waste contains. From the amount of food waste, the biogas potential is examined - how much food waste biogas generates and how much energy it corresponds to. Food waste is broken down by microorganisms under anaerobic conditions (anaerobic digestion) in a biogas plant. The final product of the digestion of food waste is raw biogas and biofertilizer. The work has only considered biogas production. Biogas potential is chosen to be investigated because no previous studies on this have been made. It provides the actual municipalities with an insight about how much biogas and energy that their food waste could generate if they separated food wastes from their household waste. The results of the survey showed that the biogas potential in the three municipalities comprises 247 000 m3/year, corresponding to an energy value of 1,6 GWh/year. The current biogas production in Sweden is at an energy value of 1 473 GWh, which means that the biogas potential in the municipalities is low.