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Biogas is big business, and a growing number of farmers have come to realize that they can pocket a healthy profit by feeding their manure into digesters that transform this valuable commodity into fuel – and the profits can be significant.
When it comes to digesters, the bottom line is that thick manure is king. Some farms with a flush manure system have tried to thicken their manure, but according to Ryan Winebrenner, business development director at Valmetal, that is not the simplest way.
“If you take flush manure and then just thicken it, you lose a lot of the volatile solids because the fine particles and dissolved solids are pumped out to the lagoons,” Winebrenner says. “They don’t go to gas production.”
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