Biomethanation of plant materials

Apple pomace and vegetable waste (radish leaves, cauliflower leaves and stalk and rotten cabbage) were subjected independently and also in succession to anaerobic digestion inoculated with cattle dung, on a laboratory scale. Each kilogram (dry weight) of apple pomace fed could generate 275 l of biogas (57% CH4), fresh vegetable waste generated 210 l of biogas (72% CH4) and rotten cabbage led to the generation of 320 l of biogas (68% CH4). Adaptation of methanogens to changing feed material was also observed.