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Table 4 Estimated model parameters of the utilized two-pool kinetic model (according to model C in Brule et al. [13])

From: Mixed silage of Elodea and wheat straw as a substrate for energy production in anaerobic digestion plants

  Data S α k F k L R 2 Sa α a R 2a
(mL g−1 VS) (mL g− 1 VS) (−) (d− 1) (d− 1) (−) (mL g− 1 VS) (−) (−)
ESC1 206 260 0.70 0.1263 0.0120 1.00 220 0.19 1.00
ESC2 166 161 0.50 0.1508 0.1506 0.99 180 0.30 0.98
ESG1 228 231 0.46 0.1095 0.1094 1.00 252 0.12 0.99
ESG2 224 275 0.73 0.1707 0.0113 1.00 238 0.40 1.00
EN 219 218 0.59 1.0899 0.1315 1.00 213 0.97 0.94
  1. aOptimized values (curve fitting) for fixed parameter values of kF = 0.3393 (d−1) and kL = 0.0780 (d−1), respectively. Fixed first-order reaction constants were calculated as the mean value of the individual kinetic parameters (kF and kL) over all experiments
  2. Data final experimental value of the discontinuous digestion test (according to VDI 4630 [12]), S estimated total methane potential (at infinite retention time), α ratio of rapidly degradable substrate to total degradable substrate, k F first-order reaction constant for rapidly degradable substrate components, k L first-order reaction constant for slowly degradable substrate components, R2 coefficient of determination