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Operation of a Field Scale Anaerobic Digester on a Swine Farm

1990; American Society of Agricultural and Biological Engineers; Volume: 6; Issue: 6 Linguagem: Inglês

10.13031/2013.26462

1943-7838

R. H. Zhang, John Robert North, D. L. Day,

Anaerobic Digestion and Biogas Production

On the Swine Research Farm at the University of Illinois, an anaerobic digester with a 199 m3 reactor operates at a temperature of 35 C and with an average loading rate of 1.7 kgVS/m3/day. Average daily biogas production is 114 m3, consisting of 64% CH4 and 35% CO2. Total solids, volatile solids, and chemical oxygen demand of the swine manure can be reduced by 59%, 66%, and 73%, respectively, during digestion. The biogas is used to fuel a 25 kW engine generator to produce electricity for emergency circuits on the farm.