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Table 1 Phylogenetic classification of the dominant sequences (relative abundance > 1% at genus level) in the acidified broth of pretreated and raw ES

From: Enhanced economic feasibility of excess sludge treatment: acid fermentation with biogas production

Phylum Genus Raw sludge Thermal (70 °C) Thermal (90 °C) Alkali (pH 10) Alkali (pH 11)
Proteobacteria Dechloromonas 51.0 4.7 1.2 4.5 41.3
Bacteroidetes Flavisolibacter 15.0 4.6 0.0 6.8 6.2
Proteobacteria Methylotenera 7.0 0.8 0.1 0.0 4.1
Bacteroidetes Parabacteroides 0.0 19.5 70.1 0.0 0.0
Proteobacteria Thermomonas 1.4 8.1 0.2 9.9 1.1
Firmicutes Clostridium 0.0 6.3 18.9 1.9 0.0
Actinobacteria Tetrasphaera 0.2 5.9 0.3 0.8 0.5
Firmicutes Tissierella 0.0 0.0 0.0 32.8 0.0
Firmicutes Proteinclasticum 0.2 0.0 0.1 20.4 2.0
Proteobacteria Azospira 1.7 9.0 0.3 1.5 18.8