The objective of the present study is to assess the impact of TS concentration, substrate mixing ratio (co digestion) and thermal pretreatment on biogas production, methane yield, VS reduction (%) and quality of biomanure through dry anaerobic digestion (DAD) of food waste (FW) and cattle manure (CM). Results divulged that the optimum methane yield and biomanure of 0.18 and 0.21 m CH/(kg VS reduced) and 3.15 and 2.8 kg/kg waste was obtained from FW at TS of 25% and 30% at an HRT of 41 and 31 days respectively whereas it was 0.32 and 0.43 m CH/(kg VS reduced) and 2.2 and 1.15 kg/kg waste from pretreated FW at an HRT of 16 and 20 days correspondingly. Improvement of methane from 62 to 81% was obtained due to thermal pretreatment. The highest nutrient recovery in terms of N, P, K was found to be 5.14, 2.6 and 3.2 respectively.

中文翻译：

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餐厨垃圾和牛粪的干式厌氧共消化：总固体、基质比例和热预处理对生物粪肥甲烷产量和质量的影响


本研究的目的是评估 TS 浓度、底物混合比（共消化）和热预处理对通过食品干式厌氧消化 (DAD) 产生的沼气、甲烷产量、VS 减少 (%) 和生物粪便质量的影响废物（FW）和牛粪（CM）。结果表明，在 TS 为 25% 和 30%、HRT 为 41 和 31 天时，从 FW 中获得的最佳甲烷产量和生物肥料分别为 0.18 和 0.21 m CH/（kg VS 减少）和 3.15 和 2.8 kg/kg 废物。而在 16 天和 20 天的 HRT 下，预处理的 FW 的废物分别为 0.32 和 0.43 m CH/（kg VS 减少）和 2.2 和 1.15 kg/kg 废物。由于热预处理，甲烷含量从 62% 提高到 81%。氮、磷、钾的最高养分回收率分别为 5.14、2.6 和 3.2。