化学
制氢
中层
发酵
生物制氢
沼气
肥料
厌氧消化
食品科学
生物能源
生物燃料
稻草
丁酸
制浆造纸工业
甲烷
氢
废物管理
农学
细菌
生物技术
生物
有机化学
无机化学
工程类
遗传学
作者
Rongzhan Liu,Xiangyu Chen,Ke Zhang,Yizhuo Han,Yeqi Tong,Juan Wang,Benyi Xiao,Junxin Liu
标识
DOI:10.1016/j.biortech.2021.126173
摘要
Long-term semi-continuous experiments were carried out under three feedstock conditions to study the effects of mixing ratio and total solids (TS) content on temperature-phased anaerobic codigestion of rice straw (RS) and pig manure (PM). The results showed that biohythane only produced from the mixture with 6% TS content and its average content were 12.83 ± 1.19% (hydrogen) and 23.68 ± 1.12% (methane). Increasing mixture TS content and decreasing its RS ratio increased biohythane production and organic matter removal by creating a suitable process pH and increasing the anaerobic reaction rates. The highest biohythane production of the mixture reached 73.09 ± 3.03 ml/g VS (hydrogen) and 235.81 ± 9.30 ml/g VS (methane) at a mixing ratio of 5:1 and TS content of 6%. A variety of hydrogen-producing bacteria were found in the thermophilic reactor and Clostridium_sensu_stricto_1 played an important role. Butyric acid fermentation is the main hydrogen-producing pathway. Methanobacterium and Methanosaeta were dominant archaea in the mesophilic reactor.
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