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Farm Business
Agricultural Matters
Anaerobic digesters
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<blockquote data-quote="Boomerang" data-source="post: 6395254" data-attributes="member: 4658"><p>I get the principle of using them to make use of a waste byproduct and turn this waste into energy , But what I don't get is the now thousands of acres of maize grown specifically to feed a digester, I've heard of an outfit running 2 foragers 20+ tractors and trailers, as well as a number of trucks to harvest and transport the maize to the digester. The fossil fuel usage must be huge.</p><p>How much energy is being used to sow ,grow , harvest and transport the maize , compared to the energy that is being extracted by the digester.</p><p>Does this only work because of subsidy ??? Or do I not fully understand the process.</p></blockquote><p></p>
[QUOTE="Boomerang, post: 6395254, member: 4658"] I get the principle of using them to make use of a waste byproduct and turn this waste into energy , But what I don't get is the now thousands of acres of maize grown specifically to feed a digester, I've heard of an outfit running 2 foragers 20+ tractors and trailers, as well as a number of trucks to harvest and transport the maize to the digester. The fossil fuel usage must be huge. How much energy is being used to sow ,grow , harvest and transport the maize , compared to the energy that is being extracted by the digester. Does this only work because of subsidy ??? Or do I not fully understand the process. [/QUOTE]
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