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Mesophilic versus thermophilic anaerobic digestion of cattle manure: methane productivity and microbial ecology.

Moset V, Poulsen M, Wahid R, Højberg O, Møller HB - Microb Biotechnol (2015)

Bottom Line: In this study, productivity and physicochemical and microbiological (454 sequencing) parameters, as well as environmental criteria, were investigated in anaerobic reactors to contribute to the ongoing debate about the optimal temperature range for treating animal manure, and expand the general knowledge on the relation between microbiological and physicochemical process indicators.In addition, the effect of the hydraulic retention time was evaluated (16 versus 20 days).Thermophilic anaerobic digestion showed higher organic matter degradation (especially fiber), higher pH and higher methane (CH₄) yield, as well as better percentage of ultimate CH₄ yield retrieved and lower residual CH₄ emission, when compared with mesophilic conditions.

View Article: PubMed Central - PubMed

Affiliation: Department of Engineering, Aarhus University, Blichers Allé 20, DK 8830, Tjele, Denmark.

No MeSH data available.


Related in: MedlinePlus

Phylum Bacterioidetes community composition as percentage of reads at family level in the cattle manures used to feed the reactors and in the thermophilic (50°C) and the mesophilic (35°C) reactors at the end of each experimental period. Each measure represents the average of two replicates.
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fig05: Phylum Bacterioidetes community composition as percentage of reads at family level in the cattle manures used to feed the reactors and in the thermophilic (50°C) and the mesophilic (35°C) reactors at the end of each experimental period. Each measure represents the average of two replicates.

Mentions: In cattle manure and mesophilic reactors, Bacteroidaceae and Porphyromonadaceae were the dominant families of the phylum Bacteriodetes (Fig. 5). These two families represented around 20% of the total reads in the cattle manure used to feed the reactors and around 15% of the total reads in the mesophilic reactors. The genus Bacteroides belonging to the Bacteroidaceae family is the most abundant core component of the human gut microbiota (Karlsson et al., 2011), where they are considered as carbohydrate-utilizing bacteria (Klocke et al., 2007). In addition, members of the Bacteroidaceae family have been characterized as important cellulolytic microorganism (Khan et al., 1980; Murray, 1986).


Mesophilic versus thermophilic anaerobic digestion of cattle manure: methane productivity and microbial ecology.

Moset V, Poulsen M, Wahid R, Højberg O, Møller HB - Microb Biotechnol (2015)

Phylum Bacterioidetes community composition as percentage of reads at family level in the cattle manures used to feed the reactors and in the thermophilic (50°C) and the mesophilic (35°C) reactors at the end of each experimental period. Each measure represents the average of two replicates.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4554467&req=5

fig05: Phylum Bacterioidetes community composition as percentage of reads at family level in the cattle manures used to feed the reactors and in the thermophilic (50°C) and the mesophilic (35°C) reactors at the end of each experimental period. Each measure represents the average of two replicates.
Mentions: In cattle manure and mesophilic reactors, Bacteroidaceae and Porphyromonadaceae were the dominant families of the phylum Bacteriodetes (Fig. 5). These two families represented around 20% of the total reads in the cattle manure used to feed the reactors and around 15% of the total reads in the mesophilic reactors. The genus Bacteroides belonging to the Bacteroidaceae family is the most abundant core component of the human gut microbiota (Karlsson et al., 2011), where they are considered as carbohydrate-utilizing bacteria (Klocke et al., 2007). In addition, members of the Bacteroidaceae family have been characterized as important cellulolytic microorganism (Khan et al., 1980; Murray, 1986).

Bottom Line: In this study, productivity and physicochemical and microbiological (454 sequencing) parameters, as well as environmental criteria, were investigated in anaerobic reactors to contribute to the ongoing debate about the optimal temperature range for treating animal manure, and expand the general knowledge on the relation between microbiological and physicochemical process indicators.In addition, the effect of the hydraulic retention time was evaluated (16 versus 20 days).Thermophilic anaerobic digestion showed higher organic matter degradation (especially fiber), higher pH and higher methane (CH₄) yield, as well as better percentage of ultimate CH₄ yield retrieved and lower residual CH₄ emission, when compared with mesophilic conditions.

View Article: PubMed Central - PubMed

Affiliation: Department of Engineering, Aarhus University, Blichers Allé 20, DK 8830, Tjele, Denmark.

No MeSH data available.


Related in: MedlinePlus