The bio-digester for the research was constructed 10 m3 GGC- 2047 Model fixed dome plant (this
design is approved by Biogas Support Program – Nepal (BSP-Nepal) at Great Himalayan Poultry
Farm in Ward No. 16, Chhauni, Kathmandu in November 2003. This bio-digester requires daily
feeding of 42 kg of poultry waste, which is mixed with 84 litres of water.