Recently, dry anaerobic co-digestion is one of the mechanisms which have been increasingly used to improve the reactor’s performance for treating livestock manure with agricultural crop residues. Due to carbohydrate, protein and lipid existing in agricultural wastes, biogas yield decreased with higher reactor volume when using wet anaerobic digestion. In this regard, the aim of this work was to achieve the production of biogas using the dry anaerobic technology through livestock manure co-digestion with agricultural waste (AW) such as potato peels, lettuce leaves and peas peels. The manure and AW were mixed at a ratio of 2:1 for 15 min before being introduced into the batch anaerobic system. The results indicated that the co-digestion of lettuce leaves and manure yielded the highest production of methane and biogas which were 6610.2 and 12756.7 ml, respectively, compared to the control (manure) that yielded 4689.9 ml and 11606.7 ml, respectively. Additionally, the results indicated that the co-digestion of lettuce leaves and manure yielded the highest specific production of methane and biogas which were 405.5 ml CH4 g−1 VS and 782.6 ml biogas g−1 VS, respectively, compared to the mono-digestion of manure (control) that yielded 328 ml CH4 g−1 VS and 633 ml biogas g−1 VS, respectively. Eventually, dry anaerobic co-digestion process is an effective approach to waste treatment.

中文翻译：

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通过粪便和农业废物的共同消化，使用干发酵技术生产沼气

最近，干式厌氧共消化是越来越多地用于提高反应器性能的机制之一，用于处理带有农作物残留物的牲畜粪便。由于农业废弃物中存在碳水化合物、蛋白质和脂质，使用湿式厌氧消化时，沼气产量随着反应器体积的增加而降低。在这方面，这项工作的目的是利用干式厌氧技术通过牲畜粪便与农业废物（AW）（如马铃薯皮、生菜叶和豌豆皮）共同消化来生产沼气。粪肥和 AW 以 2:1 的比例混合 15 分钟，然后再引入分批厌氧系统。结果表明，生菜叶和粪肥共消化产生的甲烷和沼气产量最高，分别为 6610.2 和 12756.7 ml，分别与分别产生 4689.9 ml 和 11606.7 ml 的对照（粪便）相比。此外，结果表明，与单消化相比，生菜叶和粪便的共同消化产生了最高的甲烷和沼气比产量，分别为 405.5 ml CH4 g-1 VS 和 782.6 ml 沼气 g-1 VS分别产生 328 ml CH4 g-1 VS 和 633 ml 沼气 g-1 VS 的粪便（对照）。最终，干式厌氧共消化过程是一种有效的废物处理方法。与粪便的单一消化（对照）相比，分别产生 328 ml CH4 g-1 VS 和 633 ml 沼气 g-1 VS。最终，干式厌氧共消化过程是一种有效的废物处理方法。与粪便的单一消化（对照）相比，分别产生 328 ml CH4 g-1 VS 和 633 ml 沼气 g-1 VS。最终，干式厌氧共消化过程是一种有效的废物处理方法。