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Comparative Analysis of Single-stage and Two-stage Fermentation Systems under Various Process Conditions

文献类型: 外文期刊

作者: Du, Jing; Qian, Yuting 1 ; Qu, Haoli; Xi, Yonglan 1 ; Huang, Hongying 1 ; Jin, Hongmei 1 ; Xu, Yueding 2 ; Lu, Xiwu;

作者机构: 1.Jiangsu Acad Agr Sci, East China Sci Observing & Expt Stn Dev & Utiliza, Minist Agr, Lab Agr Wastes Treatment & Recycling,Inst Agr Res, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, East China Sci Observing & Expt Stn Dev & Utiliza, Minist Agr, Lab Agr Wastes Treatment & Recycling,Inst Agr Res

关键词: Straw;Fermentation process;Single-stage fermentation;Two-stage fermentation;Wet-dry;Kinetic fitting model

期刊名称:BIORESOURCES ( 影响因子:1.614; 五年影响因子:1.923 )

ISSN: 1930-2126

年卷期: 2017 年 12 卷 1 期

页码:

收录情况: SCI

摘要: A comparative study of single-stage fermentation (wet or dry) and two-stage (wet-dry and dry-wet) fermentation systems was carried out under medium temperature conditions. The effect of the length of the first wet or dry fermentation stage (5-, 10-, 15-, 20-, and 25-d) in the two-stage anaerobic fermentation was investigated. The results showed that the gas production of wet fermentation and two-stage wet-dry fermentation was better than that of the dry fermentation and two-stage dry-wet fermentation. The cumulative gas production increased gradually with increased stage conversion times for the two-stage wet-dry fermentation. The gas production for the 20-d experimental group of the two-stage wet-dry fermentation system was the best. The cumulative biogas production in the anaerobic fermentation of straw correlated significantly with the changes in the degradation rates of volatile solids, cellulose, and hemicellulose (P < 0.01). The kinetic fitting analysis showed that the Reaction Curve (RC) model was more suitable for data modeling of the single-stage wet fermentation and two-stage wet-dry fermentation with straw than the Modified Gompertz (GM) and Modified Logistic (LM) models. The results of this study provided a theoretical basis for choosing a fermentation process for large-scale biogas production with straw.

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