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Cow Power: Methane Biogas from Manure and Other Waste
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A German town will become the first in the world to be powered by animal waste when it launches a biogas network this year.
Lünen, north of Dortmund, will use cow and horse manure as well as other organic material from local farms to provide cheap and sustainable electricity for its 90,000 residents.
Biogas is already used around the world – it will power buses in Oslo from September – but Lünen claims to be the only town to have built a dedicated biogas network.
Material such as animal slurry and spoiled crops from local farms will be fed into heated tanks, where natural fermentation will break it down into methane and carbon dioxide – the same basic ingredients as natural gas.
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