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Originally Posted by Ustwo
Methane is 13% of the greenhouse gasses produced, thats 13% by volume but 21X more potent. The biggest emmiters are land fills, natural gas, and animal digestion. Wouldn't it make sense to start with these systems being you get the most 'bang' for your buck?
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Methane does not account for 13% of greenhouse gas emissions. Did you look at the links I had posted? After adjusting the pollutants into CO2 equivalent (ie including the factor of 21), emissions just from fossil fuels outnumber methane emissions by 10:1. Again, it is a small source compared to fossil fuel useage.
For the record, methane emissions from landfills are controlled now. Landfills that emit more than 50Mg/yr of NMOCs are required to operate gas collection and control systems (collect and flare the gas). Some add a genset and use it for electricity generation instead of just flaring it.