Many years ago Mother Earth News Magazine had several articles about building methane digesters on a much smaller scale, for small farmers and homeowners. I never tried building one, but they looked like a person could produce some methane with relatively little investment.
Methane is produced as manure decomposes and usually it just is lost to the air. The digesters capture the methane before it can mix with the air.
I suspect that the large manure producers are trying to figure out how to deal with the manure in ways that the ecology people consider proper. I also bet they are getting federal subsidies to build the huge digesters--and I bet the break even point would be a lot longer than 10 years without the subsidies.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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