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Table 1 Operating conditions of the full-scale biogas plants and related parameters of the samples

From: Comparative analysis of taxonomic, functional, and metabolic patterns of microbiomes from 14 full-scale biogas reactors by metagenomic sequencing and radioisotopic analysis

Sample name Plant name Main component in the feedstock Reactor volume (m3) HRT (days) Biogas production (m3/m3/d) Operating temperature (oC) VFA (mM) Ammonia-N (g/L) pH Free ammonia (g/L)
MM1 Nysted Manurea 4800 21 2.85 37 6.32 ± 1.90 2.47 ± 0.05 7.83 ± 0.05 0.46 ± 0.07
MM2 Fangel Manure 8000 32 2.25 40 6.93 ± 0.54 4.22 ± 0.01 8.18 ± 0.03 1.42 ± 0.09
MM3 Maabjerg Manure 37,500 24 1.16 40 5.58 ± 0.20 2.63 ± 0.05 7.75 ± 0.07 0.42 ± 0.07
MT1 Sinding Manure 750 22 3.2 52 1.95 ± 0.44 2.53 ± 0.04 7.82 ± 0.04 0.46 ± 0.04
MT2a Blåhoj first step Manure 1400 11 2.36 50 21.29 ± 8.54 2.96 ± 0.05 8.18 ± 0.08 0.99 ± 0.14
MT2b Blåhoj second step Manure 1400 11 52 10.74 ± 2.33 3.3 ± 0.05 8.36 ± 0.05 1.44 ± 0.10
MT3a Lemvig first step Manure 2400 15 2.86 52 4.49 ± 0.45 2.46 ± 0.04 8.10 ± 0.04 0.73 ± 0.05
MT3b Lemvig second step Manure 2400 3 0.74 52 1.05 ± 0.19 2.31 ± 0.07 8.10 ± 0.10 0.69 ± 0.13
MT4 Filskov Manure 880 11 4.04 53 15.67 ± 0.17 2.38 ± 0.05 8.03 ± 0.06 0.63 ± 0.11
SM1 Maabjerg Sewage sludge 9000 24 0.67 37 1.19 ± 0.13 0.47 ± 0.02 7.01 ± 0.04 0.02 ± 0.01
SM2 Luntoft Sewage sludge 5000 30 3.3 37 0.65 ± 0.03 0.92 ± 0.03 7.11 ± 0.07 0.04 ± 0.01
SM3 Avedøre Sewage sludge 6000 25 0.5 39 0.64 ± 0.07 0.53 ± 0.06 7.1 ± 0.03 0.02 ± 0.01
SM4 Helsinger Sewage sludge 1400 19 0.5 37 0.60 ± 0.06 1.1 ± 0.02 7.33 ± 0.05 0.07 ± 0.01
SM5 Fakse Sewage sludge 670 22 0.36 36 1.70 ± 1.29 1.24 ± 0.06 7.53 ± 0.09 0.13 ± 0.02
  1. a Manure from both cattle and swine. The co-fermentation feedstocks were industrial organic wastes, which accounted for around 10 %