content of 2.5 ± 0.3%. The influent pH value to the digester
was kept at 5.0 ± 0.2, while the digester pH ranged between
5.4 and 5.7. The acclimatization operation was carried out till a
stabilized biogas generation and volatile solids destruction was
observed. During the acclimatization period the reactor was
monitored for pH, VFA, biogas generation, hydrogen content
and volatile solids destruction efficiency.