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Table 1 Operating data for the 10 industrial-scale biogas plants investigated in this study

From: The microbial community structure in industrial biogas plants influences the degradation rate of straw and cellulose in batch tests

Digester code TSa (%) VSb (%) HRTc (day) TMd (°C) Tot Ne (g L−1 ww) pH VFAf (g L−1) OLRg (vs g L−1 day−1) TANh (g L−1 ww) Ammoniai (g L−1 ww) Major substrate
CD01 5.7 3.5 45 38 8.7 7.8 1.3 3.0 4.6 0.365 SSMOWj, slaughterhouse waste
CD02 4.8 3.8 55 38 9.1 7.8 0.8 2.9 5.1 0.408 Thin stillage
CD03 2.6 2.0 30 37 2.6 7.3 <0.1 3.0 0.9 0.022 SSMOW
CD04 7.1 1.3 70 38 6.2 7.7 3.0 3.0 3.5 0.218 Grass, wheat-based stillage
WWTP01 2.7 1.9 17 38 2.5 7.3 <0.1 2.4 1.4 0.036 Mixed sludge
WWTP02 3.5 2.5 23 37 2.9 7.5 0.2 3.1 1.6 0.063 Mixed sludge
WWTP03 2.4 1.9 18 38 1.8 7.3 0.1 2.0 0.9 0.022 Mixed sludge
WWTP04 3.4 2.4 30 37 2.9 7.5 0.3 1.6 1.5 0.058 Mixed sludge
WWTP05 2.5 2.1 22 37 2.1 7.3 0.1 2.8 1.1 0.027 Mixed sludge
WWTP06 2.1 5.5 26 34 1.8 7.3 <0.1 1.1 1.1 0.023 Mixed sludge
  1. CD 01–04 co-digestion plants, WWTP 01–06 wastewater treatment plants
  2. aTotal solids
  3. bVolatile solids
  4. cHydraulic retention time
  5. dTemperature
  6. eTotal nitrogen
  7. fVolatile fatty acids
  8. gOrganic loading rate
  9. hTotal ammonium nitrogen
  10. iFree ammonia, calculated according to Hansen et al. [106]
  11. jSource-separated municipal organic waste