Thermophilic co-digestion of cattle manure and food waste supplemented with crude glycerin in induced bed reactor (IBR)

► Glycerin addition double the methane yield in thermophilic anaerobic co-digestion. ► Up to 93% COD removal achieved operating at 7 g COD/L day in an induced bed reactor. ► Mixtures of 87% cattle manure, 10% food waste and 3% glycerin gave 2.6 L CH4/L day. ► Methane content in biogas up to 78%.