Experimental study on biogas production from vegetable waste by anaerobic fermentation

A batches of anaerobic digestion experiments for leaves of cabbage wastes were conducted in self-manufactured anaerobic fermentation equipment. The feasibility of anaerobic digestion disposal of leaves of cabbage wastes and the effect of different concentration inoculums on anaerobic digestion were studied. The results show that the anaerobic digestion can fit for the characteristics of anaerobic fermentation of vegetable wastes. Among inoculums concentrations of 20%, 30% and 50%, the contents of VFA, NH4+-N and pH value for the 30% inoculums concentration were normal, and the total biogas content and the maximum CH4 content were 7790.81 mL and 42.514%, respectively, which were obviously higher than those of other two treatments and control. This study provided a good reference for the research and development of the comprehensive utilization of vegetable waste.