Process Engineering Centre, High Technical Institute José Antonio Echeverría (CUJAE), 11901, 114 Street, Marianao, Havana, Cuba.
Bioresour Technol. 2011 Dec;102(23):10834-40. doi: 10.1016/j.biortech.2011.09.031. Epub 2011 Sep 18.
Several wastes from agro-industrial activities were mixed in different ratios to evaluate the co-digestion process. Methane yield YCH4, specific methanogenic activity (SMA) and a kinetic parameter (k0) were determined. A second feeding was also performed to examine the recovery of bacterial activity after exhaustion. Mixture ratios of 1:1:1:1 and 1:3:4:0.5 (w/w) showed the best performance, with YCH4 of 664; 582 NmL CH4/gVSsubstrate, as well as SMA of 0.12; 0.13 gCODNmLCH4/gVSinoculum/d, respectively, during the digestion of the first feed. It was possible to relate synergetic effects with enhancement in YCH4 by up to 43%, compared with values calculated from YCH4 of the individual substrates. All batches started up the biogas production after an exhaustion period, when a second feed was added. However, long lag phases (up to 21 days) were observed due to stressed conditions caused by the substrate limitation prior to the second feed.
几种农业工业活动废物以不同比例混合，以评估共消化过程。甲烷产量 YCH4、特定甲烷活性（SMA）和动力学参数（k0）被确定。还进行了第二次进料以检查细菌活性在耗尽后的恢复情况。混合比为 1:1:1:1 和 1:3:4:0.5（w/w）表现出最佳性能，在第一次进料消化时，YCH4 分别为 664；582 NmL CH4/gVS 基质，以及 SMA 为 0.12；0.13 gCODNmLCH4/gVS 接种物/d。与从单个基质的 YCH4 计算的值相比，有可能与高达 43%的协同效应相关联。所有批次在添加第二次进料后都经历了一个耗尽期，然后开始产生沼气。然而，由于在第二次进料之前底物限制引起的压力条件，观察到了长的迟滞期（长达 21 天）。
