| Abstract:The methane was produced through the mesophilic anaerobic co-digestion of paper mill sludge (PS) and kitchen waste in batch reactors. The influence of different ratioes of the sludge and kitchen waste on the production rate of methane was studied. The results showed that the accumulative methane yield and the daily methane production for each reactor followed the trend of A2>A1>A3 (A1, A2, A3 refer to different reactors), and the VS removal efficiency in each reactor also followed the same trend; the peak values of accumulative methane yield, daily methane production and VS removal efficiency were 9743 mL, 650 mL and 41%, respectively. Meanwhile, the alkalinity and VFA concentrations of each reactor ranked in A1>A2>A3; the alkalinity and VFA concentrations were too high in reactor A1 for the microorganisms in the system, but it was suitable in reactor A2 and A3 for the steady of the systems. |
