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. 2014 May 2;217(7):785–795. doi: 10.1016/j.ijheh.2014.04.004

Fig. 1.

Fig. 1

Schematic illustration of the biogas digester system operated by Vietnamese small-scale pig farmers (1: inlet tank; 2: inlet pipe; 3: digester tank; 4: gas collection pipe; 5: outlet pipe; 6: compensation tank; 7: overflow pipe; 8: effluent tank).