To improve the production rate of methane, powder-activated carbon (PAC), granule activated carbon (GAC), titanium dioxide-anatase (TiO₂), and synthesized zeolite (permutit) were added in the co-digestion process. The co-substrates were corn stover (CS) and pig manure (PM) mixed in the ratio of 1:2 (w/w). The kinetic analysis model and ADM1da model were applied to obtain the kinetic parameters of the process. Besides, the heat flow analysis of the co-digestion process was determined using isothermal microcalorimetry. The addition of the PAC, GAC, TiO₂, and synthesized zeolite improved the methane cumulative yield by 40.12, 31.25, 31.17, and 43.74% respectively, as compared with the control reactor. The kinetic analysis and ADM1da model results indicated that the overall rate constant of the co-digestion process increased by 1.5 times averagely because of the effect of these materials. It was also observed that much higher heat energy released from the experimental sample compared with the control reactor, which indicated that the improvement of the metabolic process of the AcoD system. The addition of TiO₂-anatase improved methane production by 31.17%, which could be a promising method to improve the biomethane in a large-scale due to its availability and accessibility.

为了提高甲烷的生产率，在共消化过程中添加了粉状活性炭（PAC），颗粒状活性炭（GAC），二氧化钛-锐钛矿（TiO ₂）和合成沸石（置换沸石）。共基质为玉米秸秆（CS）和猪粪（PM）以1：2（w / w）的比例混合。应用动力学分析模型和ADM1da模型获得了该工艺的动力学参数。此外，使用等温微量热法测定了共消化过程的热流分析。PAC，GAC，TiO _2的添加与对照反应器相比，合成沸石的甲烷累积收率分别提高了40.12％，31.25％，31.17％和43.74％。动力学分析和ADM1da模型结果表明，由于这些物质的作用，共消化过程的总速率常数平均提高了1.5倍。还观察到，与对照反应器相比，实验样品释放的热能高得多，这表明AcoD系统的代谢过程得到了改善。TiO _2-锐钛矿的加入使甲烷产量提高了31.17％，由于其可用性和可及性，这可能是大规模改进生物甲烷的一种有前途的方法。