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Table 4 Kinetic parameters of biogas production, methane (CH4) percentage and methane yield

From: Towards an ideotype for food-fuel dual-purpose wheat in Argentina with focus on biogas production

Season

Group

Bmax (Nml/g VS)

k (day −1)

CH4 (%)

Methane yield (m3/ha)

2014

CI-HY

424.5 ± 5.8b

0.111 ± 0.004a

55.8 ± 0.5a

1800 ± 29c

CI-LY

418.2 ± 5.5ab

0.125 ± 0.005b

55.3 ± 0.5a

1238 ± 66a

CR-HY

422.8 ± 6.8ab

0.126 ± 0.002b

55.1 ± 0.4a

2164 ± 137d

CR-LY

405.6 ± 9.5a

0.118 ± 0.004ab

56.1 ± 0.5a

1503 ± 54b

FR-HY

426.7 ± 4.8b

0.127 ± 0.003b

55.5 ± 0.5a

1944 ± 65cd

FR-LY

426.4 ± 4.8b

0.124 ± 0.005b

55.6 ± 0.5a

1562 ± 73b

2017

CI-HY

432.5 ± 6.7ab

0.128 ± 0.003a

55.6 ± 0.2a

nd

CI-LY

417.0 ± 4.4a

0.126 ± 0.003a

56.0 ± 0.3a

nd

CR-HY

442,4 ± 6.4b

0.129 ± 0.006a

55.3 ± 0.2a

nd

CR-LY

439.4 ± 8.3b

0.122 ± 0.008a

55.9 ± 0.2a

nd

FR-HY

434.3 ± 6.6ab

0.126 ± 0.006a

55.8 ± 0.2a

nd

FR-LY

432.1 ± 7.1ab

0.127 ± 0.005a

55.9 ± 0.3a

nd

  1. Best fitting values for Bmax and k, and methane content of biogas for the six wheat genotype groups, for both 2014 and 2017 seasons. Methane content was determined after cumulative biogas reached a plateau. Methane yield was determined during season 2014. Data represent mean ± SE (n = 12) of all genotypes grouped according to Table 1. Different letters indicate significant differences (p ≤ 0.05)
  2. nd not determined