Biochars made from brewer’s spent grain were added to the anaerobic digestion of enhance methane fermentation process and improve biogas production. In research, effect biochars at 300, 450, 600 °C doses 1-8% was tested. The biochemical potential tests in mesophilic conditions performed. took 28 days, yield for each reactor varied 500-650 ml×gVS-1, around 60% substrate degradation obtained. For...