Recycling waste and converting municipal solid waste (MSW) to useful materials, especially energy sources, is one of the most useful environmental effort, which prevent biological pollution and minimizes the stress on natural resources. This study investigates the improvement of biogas gained from MSW. Anaerobic digestion (AD) MSW and sewage sludge (SS) were studied at different mixing ratios at mesophilic condition. Higher methane yield but longer hydraulic retention time (HRT) was observed by increasing the percentage of MSW. The optimal mixing ratio for biogas production was determined. After 20 days, approximately 90% (376.84 mL/g VS) of the cumulative methane was produced. The same ratio was used for further study on the effect of total solids (TS) (5–25%) on biogas yield. It was found that lower TS levels (5–10%) yield more methane. Biogas production at 5% TS was 64% higher than that of 25% TS. The amounts of methane produced at 5, 10, 15, 20, and 25% TS were 230.3, 196.8, 159.5, 129.4, and 83.3 mL/g VS, respectively.

回收废物并将城市固体废物 (MSW) 转化为有用的材料，尤其是能源，是最有用的环境努力之一，可以防止生物污染并最大限度地减少对自然资源的压力。本研究调查了从 MSW 中获得的沼气的改进。厌氧消化 (AD) MSW 和污水污泥 (SS) 在中温条件下以不同的混合比进行了研究。通过增加 MSW 的百分比，观察到更高的甲烷产量但更长的水力停留时间 (HRT)。确定了沼气生产的最佳混合比。20 天后，产生了大约 90% (376.84 mL/g VS) 的累积甲烷。相同的比率用于进一步研究总固体 (TS) (5-25%) 对沼气产量的影响。发现较低的 TS 水平 (5–10%) 会产生更多的甲烷。5% TS 的沼气产量比 25% TS 的沼气产量高 64%。在 5%、10%、15%、20% 和 25% TS 下产生的甲烷量分别为 230.3、196.8、159.5、129.4 和 83.3 mL/g VS。