BASIC DATA ON BIOGAS - Energikontor Sydost

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SubstrateSwedish Gas Centre: Basic Data on BiogasPotential biogas productionThere is a large potential to increase the Swedish biogas production asbiogas can be produced from various types of substrates that are currentlytreated as residues or waste. Agricultural residues represent the greatestpotential resource. The theoretical potential biogas production in Swedenhas been estimated to be more than 15 TWh/year, which is around tentimes more than the current production.Potential biogasproduction withlimitations * [TWh]Total biogaspotential[TWh]Food wastes 0.76 1.35Wastes from parks and gardens 0 0.40Industrial waste and residues(including food industry)1.06 1.96Sludge from wastewater treatmentplants0.70 0.73Agricultural residues and manure ** 8.10 10.78Totalt 10.62 15.22*Taking into account limitations in todays technical and economical situation.**5.8 TWh of this potential origins from straw which requires pretreatment before digestion.Source: Den svenska biogaspotentialen från inhemska restprodukter, 2008.Biogas can also be produced from crops. This potential is difficult to estimateand depends entirely on which assumptions are made regarding land use, cropand yield. If 10 % of the agricultural land in Sweden is used, approximately 7TWh of biogas could be produced annually.(Source: Biogaspotential och framtida anläggningar i Sverige, 1998)2
The biogas processSwedish Gas Centre: Basic Data on BiogasBiogas, which is mainly composed of methane and carbon dioxide, isproduced during the decomposition of organic matter in anaerobicconditions. The organic matter is decomposed in a number of steps in acollaboration between several different types of microorganisms. Theefficiency of the biogas production depends on how suitable the conditionsare for the microorganisms. To initiate a biogas process, sludge containingthe bacteria for starting the process is inoculated from an existing biogasplant.The biogas process divided into a number of stages that take place duringdigestion. (Illustration: Energigas Sverige)3
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Page 15 and 16: Utilisation of biogasSwedish Gas Ce
Page 17 and 18: Biogas as vehicle fuelSwedish Gas C
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Page 21 and 22: Environmental benefitsSwedish Gas C
Page 23 and 24: Permits and inspectionsSwedish Gas
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BASIC DATA ON BIOGAS - Energikontor Sydost

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