Bio-Delignification of Green Waste (GW) in Co-Digestion with the Organic Fraction of Municipal Solid Waste (OFMSW) to Enhance Biogas Production

The organic fraction of municipal solid waste (OFMSW) is recognized as a suitable substrate for the anaerobic digestion (AD) process and currently considered mature technology. A promising strategy to enhance biogas yield productivity co-digestion OFMSW with other biomass, such green (GW), mixture leaves, grass, woody materials originated from private yards public greenspace management. main limitation use GW production high percentage lignocellulosic fraction, which makes necessary pretreatment delignification dissolve recalcitrant structure. In this study, new sustainable bio-delignification using white-rot fungi Bjerkandera adusta (BA) in comparison chemical pretreatments were investigated. Untreated treated were, respectively, submitted OFMSW. AD processes carried out lab-scale plant 30 days thermophilic conditions (55 °C). Biogas cumulative was increased by about 100% case compared that just OFMSW, 145 289 Nm3 CH4/ton SV, almost doubled 283 Nm3/ton FM * day. measured average methane content values 55% 54% GW. Moreover, over 95% produced 20 days, showing potential opportunity reduce time.