Ammonium bicarbonate pretreatment of corn stalk for improved methane production via anaerobic digestion: Kinetic modeling

被引：14
|
作者：
He, Chao [1 ]
Zhao, Junhui [1 ]
Wang, Shaopeng [1 ]
Guan, Shanyue [1 ]
Zhang, Zhiping [1 ]
Zhang, Quanguo [1 ]
Pan, Xiaohui [1 ]
Jiao, Youzhou [1 ]
机构：
[1] Henan Agr Univ, Coll Mech & Elect Engn, Key Lab New Mat & Facil Rural Renewable Energy, Minist Agr,Collaborat Innovat Ctr Biomass Energy, Zhengzhou 450002, Henan, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2019年 / 292卷
关键词：
Ammonium bicarbonate; Pretreatment; Corn stalk; Anaerobic digestion; Biogas; BIOGAS PRODUCTION; OPTIMIZATION; SLUDGE; HYDROLYSIS; SOAKING; FIBERS; MANURE; WASTE;
D O I：
10.1016/j.biortech.2019.122052
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This work studied the effects of ammonium carbonate pretreatment on biogas production during sequential anaerobic digestion. The results showed that the addition of ammonium bicarbonate (8%, w/w) obtained the highest biogas production of 14,690 mL with a yield of 222.6 mL g(-1), which was 31% higher than that of un-pretreated (control experiment). Interestingly, the COD removal was increased by 100%. Furthermore, it was also helpful in stabilizing the pH of anaerobically digested corn stalk. Based on the results, the modified Gompertz equation fitted the cumulative biogas production curves very well, with high correlation coefficients (> 0.994).
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页数：4
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