Study on Anaerobic Digestion Characteristics of Hulless Barley Straw and Livestock Manure
Co-digestion performance of hulless barley straw mixed with pig, fowl, sheep, and cow manure induced by microbial changes were studied based on mesophilic batch anaerobic digestion (AD) experiments. The mixed AD of hulless barley straw and four kinds of manure yielded the synergistic promotion effec...
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Published in | Biotechnology and bioprocess engineering Vol. 28; no. 5; pp. 813 - 825 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Seoul
The Korean Society for Biotechnology and Bioengineering
01.10.2023
Springer Nature B.V 한국생물공학회 |
Subjects | |
Online Access | Get full text |
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Summary: | Co-digestion performance of hulless barley straw mixed with pig, fowl, sheep, and cow manure induced by microbial changes were studied based on mesophilic batch anaerobic digestion (AD) experiments. The mixed AD of hulless barley straw and four kinds of manure yielded the synergistic promotion effect of materials. The highest methanogenic performance was achieved by AD of hulless barley straw mixed with pig manure, and the digestion process was the fastest when mixed with fowl manure. When the volatile solids (VS) ratio of hulless barley straw to pig manure was 1:3 (H
1
P
3
), the maximum cumulative methane production was 356.55 mL·g
−1
VS. The composition of raw materials could significantly impact on the microbial community composition. In terms of bacteria, Syner-01 and Synergistaceae_unclassified were the most abundant in H
1
P
3
group.
Proteiniphilum
and
Ercella
were the most abundant in the AD system supplemented with pig manure.
Fermentimonas, Sulfurovum
and
Desulfomicrobium
were the most abundant in the AD system supplemented with fowl manure, cow manure and sheep manure, respectively. In archaea, the concentration of hydrogenotrophic methanogens, such as
Methanobrevibacter, Methanoculleus, Methanospirillum
and
Methanoplanus
, could be enriched in the mixed AD system. In addition, the digestate nutritional content exerted significantly positive influence on Syner-01,
Methanobrevibacter
and other seven genera, while volatile fatty acids and ammonia nitrogen positively influenced the concentration of
Smithella
and
Fermentimonas
, respectively. |
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ISSN: | 1226-8372 1976-3816 |
DOI: | 10.1007/s12257-023-0087-3 |