School of Environmental Science and Engineering, China-America CRC for Environment & Health of Shandong Province, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
School of Environmental Science and Engineering, China-America CRC for Environment & Health of Shandong Province, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong 266237, PR China.
Bioresour Technol. 2021 Feb;321:124429. doi: 10.1016/j.biortech.2020.124429. Epub 2020 Nov 20.
This study aimed to investigate the synergistic effect and microbial community changes between chicken manure (CM) and cardboard (CB) during anaerobic co-digestion. Meanwhile, the energy balance of biogas engineering was extrapolated based on the batch tests. In batch tests, co-digestion system achieved the highest improvement (14.2%) and produced 319.62 mL CH/gVS with a 65:35 ratio of CB: CM. More extracellular polymeric substance secretion promoted the electron transfer for acidogenesis and more hydrolase was provided with 31.6% improvement. The microbial analysis illustrated that higher acetoclastic Methanosaeta abundance was achieved, leading to 211% enhancement of acetoclastic pathway. Moreover, associated network illustrated that the higher methane production was mainly achieved through matching of hydrolytic bacteria and acidogenesis bacteria. As for energy balance, the synergistic effect increased the energy output by 38% and energy recovery to 46.4%.
本研究旨在探究鸡粪（CM）和纸板（CB）在厌氧共消化过程中的协同效应和微生物群落变化。同时，基于批量测试推断沼气工程的能量平衡。在批量测试中，共消化系统实现了最高的提升（14.2%），并以 CB:CM 为 65:35 的比例产生了 319.62 mL CH/gVS。更多的胞外聚合物分泌促进了产酸菌的电子传递，并且提供了 31.6%的改进，更多的水解酶。微生物分析表明，获得了更高的乙酸营养型甲烷菌丰度，导致乙酸营养型途径提高了 211%。此外，相关网络表明，更高的甲烷产量主要是通过水解菌和产酸菌的匹配实现的。至于能量平衡，协同效应将能量输出增加了 38%，能量回收率提高到 46.4%。
