Food and Fermentation Industries >

2022 , Vol. 48 >Issue 1: 188 - 194

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.027639

Analysis of biogas production capacity of dry corn stover silage with wastes by single-phase anaerobic co-digestion

  • YANG Xu ,
  • MENG Xiangyu ,
  • SONG Lili ,
  • ZHANG Zhiping ,
  • MA Geli ,
  • WEI Tao
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  • 1(College of Food and Bioengineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)
    2(Zhengzhou Key Laboratory of Metabolic Engineering and Systems Biology,Zhengzhou 450002,China)

Received date: 2021-04-07

  Revised date: 2021-05-06

  Online published: 2022-01-27

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Abstract

In this study, dry corn stover (DCS), excess sludge (ES) and pig manure (PM) were used as fermentation raw materials to study the pretreatment method and anaerobic digestion process in order to provide a scientific basis for the stable operation of modern biogas project. The DCS was pretreated with micro-organisms such as Bacillus and lactic acid bacteria. The composition changes and microbial diversity were studied before and after micro-storage. On this basis, the effects of two-phase and single-phase AD on biogas yield were investigated. Finally, anaerobic co-digestion was carried out to further improve the biogas yield with DCS silage, ES and PM. The results showed that the pH value of DCS silage was reduced, while the concentration of organic acids was increased. Cellulose was protected effectively without degradation. The lactic acid bacteria were the dominant bacteria in the DCS silage. The cumulative biogas yield of DCS by two-phase AD and DCS silage single-phase AD reached 292.06 and 411.46 mL/g TS, respectively. The DCS silage and ES/PM were mixed in proportion for single-phase anaerobic co-digestion, the cumulative biogas production reached 500.97 and 599.39 mL/g TS, respectively. These results provided a reference for improving the gas production and fermentation efficiency of the mixed materials.

Key words： dry corn stover; silage; high throughput sequencing technology; anaerobic digestion; biogas

Cite this article

YANG Xu , MENG Xiangyu , SONG Lili , ZHANG Zhiping , MA Geli , WEI Tao . Analysis of biogas production capacity of dry corn stover silage with wastes by single-phase anaerobic co-digestion[J]. Food and Fermentation Industries, 2022 , 48(1) : 188 -194 . DOI: 10.13995/j.cnki.11-1802/ts.027639

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