This study aims to evaluate the effects of the co‐digestion of agricultural residues with manure from camelids from the Andean zone. Different combinations of llama manure (LM) and vicuñas (VM) were made with amaranth (AS), quinoa (QS), and wheat (WS) residues. They were fermented using sewage sludge as inoculum. The co‐digestion was evaluated under mesophilic conditions for 40 days. The ratios of volatile substances of substrate / co‐substrate evaluated were 0:100; 25:75; 50:50, 75:25, and 100:0. Two substrate / inoculum ratios (SIR 1:1 and SIR1:2) were also evaluated. The results indicate that the maximum methane accumulation rate is obtained in SIR 1:1 for a VM‐AS ratio (25:75) with 540 mL/g volatile solid (VS). In general, the results did not increase with the increase in inoculum; rather, the tendency to improve methane yield is associated with an increase in the amount of agricultural residues, mainly AS. Regarding the kinetic modeling, the transfer model is the one that best adjusted the predicted values to those observed with an r² between 0.991 and 0.999, and an RMSE value between 2.06 and 13.62 mL/g (volatile solid) VS. Finally, all the trials presented synergistic effects in their co‐digestion except the digesters formed by LM‐AS, LM‐QS and LM‐WS of SIR 1:2. These presented antagonistic effects in which the addition of the co‐substrate generated competition with the substrates, reducing methane production. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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农业木质纤维素残留物与南美骆驼科动物粪便共同消化的影响

本研究旨在评估安第斯地区骆驼科动物粪便中农业残留物与粪便共消化的影响。用with菜（AS），藜麦（QS）和小麦（WS）残留物制成了美洲驼粪（LM）和骆驼毛（VM）的不同组合。他们用污水污泥作为接种物发酵。共消化在中温条件下进行了40天的评估。评估的底物/共底物中挥发性物质的比例为0：100；25:75; 50：50、75：25和100：0。还评估了两种底物/接种物比率（SIR 1：1和SIR1：2）。结果表明，对于540 mL / g挥发性固体（VS）的VMAS比（25:75），在SIR 1：1中可获得最大的甲烷累积速率。一般而言，结果不会随接种量的增加而增加。相反，甲烷产量提高的趋势与农业残留物（主要是AS）残留量的增加有关。关于动力学建模，传递模型是将预测值最佳地调整为在r ²在0.991和0.999之间以及RMSE值在2.06和13.62 mL / g（挥发性固体）VS之间观察到的模型。最后，除了由SIR 1：2的LM-AS，LM-QS和LM-WS组成的消化池外，所有试验均在协同消化中表现出协同作用。这些表现出拮抗作用，其中添加共底物会与底物发生竞争，从而降低甲烷的产生。©2021化学工业协会和John Wiley＆Sons，Ltd