Inoculum origin and waste solid content influence the biochemical methane potential of olive mill wastewater under mesophilic and thermophilic conditions

摘要: Abstract The biological valorization of olive mill wastewater (OMW) is often problematic due to the characteristically high organic load and phenolic compound content this waste stream. present study aimed at determining optimal conditions (i.e. temperature, solid content) for anaerobic digestion OMW, striving maximum methane yield. Therefore, inocula originating from a treatment plant two lab-scale bioreactors treating OMW (mesophilic Up-flow Anaerobic Sludge Blanket (UASB) reactor thermophilic Packed Bed Reactor (UPBR)), were tested in terms degradation potential yield under mesophilic conditions, through Biochemical Methane Potential (BMP) assays. yields all cases higher raw (325-472 mL CH 4 /g VS added ) compared centrifuged (219-391 mL ). Moreover, greatest biodegradability extent (94.0-98.5%) was achieved by sludge UASB reactor. specific production rate (121 mL VSS ∙d) reached inoculum obtained using OMW. These results indicate that temperatures are (AD) productivity biodegradation potential, while no removal necessary.