Semi-continuous feeding combined with traditional domestication improved anaerobic performance during treatment of cassava stillage
Semi-continuous feeding combined with traditional domestication improved anaerobic performance during treatment of cassava stillage
复制标题
半连续饲喂结合传统驯化改善木薯酒糟处理过程中的厌氧性能
DOI：
10.1016/j.biortech.2019.121807
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发表时间：
2019
影响因子：
11.4
通讯作者：
Peihong Shen
中科院分区：
文献类型：
--
作者：
Fuzhi Lu;Qiong Jiang;Feng Qian;Quanneng Zhou;Chengjian Jiang;Peihong Shen
研究了不同投料方式对木薯秸秆厌氧消化的影响。在两个内循环（IC）反应器（A和B）中分别采用连续进料和半连续进料。反应器在厌氧消化过程中表现出不同的性能。反应器B的可溶性化学需氧量（SCOD）去除率和产气量分别比反应器A高23.2%和95.7 L/2 d，差异最大。微生物群落分析表明，随着消化过程的进行，优势菌和产甲烷菌的丰度在反应器B中逐渐高于反应器A。因此，在高OLR条件下，半连续饲养在SCOD去除率、产气量和产甲烷菌相对丰度方面均优于连续饲养。
The effects of feeding pattern were studied during anaerobic digestion of cassava stillage. Continuous feeding and semi-continuous feeding, were adopted in two internal circulation (IC) reactors (A and B, respectively). The reactors showed different performance in the anaerobic digestion process. The maximum difference, was observed for the soluble chemical oxygen demand (SCOD) removal rate and the biogas production, which were 23.2% and 95.7 L/2 d higher in reactor B than reactor A, respectively. The overall VFAs level of reactor A was higher than that of reactor B. Microbial community analyses indicated that the abundances of dominant bacteria and methanogens became higher in the reactor B than in reactor A as the digestion process progressed. Hence, semi-continuous feeding showed superior performance than continuous feeding for SCOD removal rate, biogas production, and the relative abundances of methanogens in the case of high OLR.