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MADRID — Firefighters in Spain are battling a major wildfire that probably started after a heap of manure self-ignited amid the intense European heat wave.
Around 10,000 acres of forest and other vegetation were affected by the blaze near Tarragona in the country’s northeast, according to the Catalan regional government.
Authorities said the fire likely began when an “improperly managed” pile of manure self-combusted in the heat, causing sparks.
originally posted by: Sillyolme
a reply to: Gothmog
Being raised on a farm you should know first hand that a compost heap generates heat.
And that it requires you add water at regular intervals to prevent fires.
originally posted by: Sillyolme
a reply to: Gothmog
Being raised on a farm you should know first hand that a compost heap generates heat.
And that it requires you add water at regular intervals to prevent fires.
Microbially generated heat – or what I call a “Biological Fire” – is the match that can lead to spontaneous combustion, a chemical fire with smoking embers, and at worst, flames. While surface fires nearly always are caused by human or external situations, spontaneous combustion is the result of failing to control the internal pile temperature. In both cases, the source of this energy is oxidation of organic matter, or volatile solids. Water, carbon dioxide, energy and other gases are given off, leaving a residue. In the case of the composting process, waste energy is generated as heat, and the residue is compost. For spontaneous combustion to occur, heat from both biological oxidation and chemical oxidation are needed. The biology of the process can bring the temperature up through 55°C to assure pathogen kill, but will continue to rise into the 70°C to 80°C range, where chemical oxidation takes over as the predominant energy source and biological death occurs. Unless immediate action reduces this temperature, a compost fire is very likely. In short, both biological and chemical oxidation – combined with retention of the heat in a pile – are required for spontaneous combustion.
originally posted by: MichiganSwampBuck
With the spontaneous combustion temperature of methane at around 600 degrees C (1,112 degrees F) it seems like conditions would have to be just right for a pile of manure to ignite. A huge mulch pile of grass clippings we had got really hot one summer, but it never got close to that hot. But under the right conditions I suppose it it possible but IMO highly unlikely. I'd like some proof that manure and high temperature weather was the real cause, otherwise I'd think it was something else like a cigarette butt or other source that was to blame. A dew drop magnifying the sun would be more likely a source of combustion IMO.