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Table 3 Inoculum characteristics (mean ± S.D, N = 3)

From: Effects of H2:CO2 ratio and H2 supply fluctuation on methane content and microbial community composition during in-situ biological biogas upgrading

Parameters

Inoculum

Total chemical oxygen demand, tCOD (g L−1)

20.52 ± 1.01

Total solid, TS (% FM)

2.51 ± 0.12

Volatile solid, VS (% FM)

1.48 ± 0.10

pH

7.82

Total ammonium nitrogen (g L−1)

1.09 ± 0.04

Total volatile fatty acid (g L−1)

0.73 ± 0.04

Acetic acid (g L−1)

0.34

Propionic acid (g L−1)

0.23 ± 0.01

Butyric acid (g L−1)

0.02 ± 0.01

Iso-butyric acid (g L−1)

0.06 ± 0.01

Iso-valeric acid (g L−1)

0.07 ± 0.01

  1. FM fresh matter