blue flame is an indication of high quality biogas. Cow manure has been selected for investigation in this study
because only small-to-large scale dairy farms exist in Jordan, thus, the quantities of cow manure produced daily
deemed sufficient to install a biogas unit. Furthermore, the hot arid climate of Jordan provides optimal temperatures
for the anaerobic digestion. In experimental study by Aoki et al. [26] a 60 m3 capacity digester operating
with dairy manure at a digester temperature of 55˚C, average loading rate of about 7 kg/m3/day and hydraulic
retention time of 13 days, the average biogas production was 150 m3/day with 56% methane content in a cold
region in Japan.
The objective of this technical experiment is mainly to construct a mini-unit for biogas production in a dairy
cow farm to improve waste management and produce biogas for heat generation. The project also aims at assessing
the economic feasibility of biogas production in small scale farms to generate a production template to
possibly replicate the biogas production facility to other areas in Jordan.