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Augmentation characteristics and microbial community dynamics of low temperature resistant composite strains LTF-27
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Augmentation characteristics and microbial community dynamics of low temperature resistant composite strains LTF-27
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Journal Article
Augmentation characteristics and microbial community dynamics of low temperature resistant composite strains LTF-27
2022
Overview
Biogas production in the cold regions of China is hindered by low temperatures, which led to slow lignocellulose biotransformation. Cold-adapted lignocellulose degrading microbial complex community LTF-27 was used to investigate the influence of hydrolysis on biogas production. After 5 days of hydrolysis at 15 ± 1 °C, the hydrolysis conversion rate of the corn straw went up to 22.64%, and the concentration of acetic acid increased to 2596.56 mg/L. The methane production rates of total solids (TS) inoculated by LTF-27 reached 204.72 mL/g, which was higher than the biogas (161.34 mL/g), and the control group (CK) inoculated with cultural solution (121.19 mL/g), the methane production rate of volatile solids (VS) increased by 26.88% and 68.92%, respectively.
Parabacteroides
,
Lysinibacillus
, and
Citrobacter
were the main organisms that were responsible for hydrolysis. While numerous other bacteria genera in the gas-producing phase, Macellibacteroides were the most commonly occurring one.
Methanosarcina
and Methanobacteriaceae contributed 86.25% and 11.80% of the total Archaea abundance during this phase. This study proves the psychrotrophic LTF-27’s applicability in hydrolysis and biomass gas production in low temperatures.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
