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Table 1 Effect of ammonium acetate concentration on characteristics of anaerobic digestion

From: Semi-continuous anaerobic digestion for biogas production: influence of ammonium acetate supplement and structure of the microbial community

Group Different period (days) Average daily total biogas production (mL) Average daily CH 4 concentration (%) NH 4 + (g/L) Volatile fatty acids (g/L)
L 10 1,837.0 ± 46.4 61.66 ± 1.56 1.47 2.44
25 1,767.5 ± 48.3 61.14 ± 2.38 1.86 4.88
51 1,880.4 ± 37.9 59.11 ± 1.62 1.97 8.00
M 10 1,757.3 ± 54.1 63.38 ± 1.52 1.27 2.83
25 1,708.5 ± 37.1 61.80 ± 2.17 2.73 5.69
51 1,586.4 ± 40.8 54.53 ± 2.08 3.22 8.70
H 10 1,710.5 ± 56.3 64.39 ± 1.81 1.48 3.80
25 1,586.5 ± 43.6 61.39 ± 1.69 3.35 9.69
51 1,266.9 ± 49.6 45.86 ± 1.96 5.97 15.44
Blank 10 1,678.0 ± 42.4 52.42 ± 1.66 0.15 3.63
25 1,778.3 ± 53.1 56.65 ± 2.20 0.12 6.44
51 1,256.8 ± 51.6 47.08 ± 2.12 0.27 9.55