A Technical Experiment on Biogas Production from Small-Scale Dairy Farm


The key objective of this study was to evaluate the economic feasibility of producing biogas from privately-owned dairy farm in the North of Jordan. This experiment did not adopt Best-Available-Technology (BAT) but rather traditional unit manufactured with minimized costs through installing locally produced materials to avoid economic burden on the farmers’ production costs. A thermophilic biodigester unit was built sub-surface with 22 m3 capacity (15 m3 manure tank plus 7 m3 biogas holder) in a relatively small scale dairy farm. The daily feed was about 500 liter of cow slurry (150 - 200 liter cow manure) and the remaining were production liquids. The retention time was approximately 25 - 30 days and the seasonal temperature measured was about 18°C - 20°C. The unit was thermally insulated; therefore, the temperature fluctuation was slightly around +/-3°C. The daily biogas production was estimated at 7 m3 equivalent to 4 kg of Liquefied Petroleum Gas (LPG) or 11 (12.5 kg) LPG cylinders per month worth US$140. The methane percentage was 60% in relatively warm temperature (18°C - 20°C) and approximately 56% in colder temperature

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Al-Rousan, A. and Zyadin, A. (2014) A Technical Experiment on Biogas Production from Small-Scale Dairy Farm. Journal of Sustainable Bioenergy Systems, 4, 10-18. doi: 10.4236/jsbs.2014.41002.

Conflicts of Interest

The authors declare no conflicts of interest.


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