ADM1 simulation of continuous anaerobic digestion of microalgae: The effect of
parameter selection. Figure 1 shows the performance of a virtual anaerobic digester
operating in continuous mode with microalgae as a feedstock. The results obtained
from experiments investigating the AD of raw and residual microalgae were used to
perform the simulations (Fernández-Rodríguez et al. 2014; Neumann et al. 2015).
To this aim, the inlet COD was fixed at 50 gCOD/L and the volume of the reactor at
1000 m
3 , while the organic loading rate was increased by changing the inlet
microalgae flow rate. In addition, the macromolecular composition of the raw
microalgae was set at 58, 22 and 20% for proteins, carbohydrates and lipids,
respectively (Passos et al. 2015). The simulation considered an inert fraction of the
organic matter of 24%, estimated from the BMP results. The macromolecular
composition of the residual microalgae was set at 64.5, 31.3 and 4.2% for proteins,
carbohydrates and lipids, respectively (adapted from Neumann et al. 2015). In this
Table 5 Kinetic parameters from the first-order equation in the AD of microalgae
References
k H (1/d)
B max (mLCH 4 /gVS) Microalgae
Neumann et al. (2015)
0.09
413 (13)
B. braunii
Fernández-Rodríguez et al. (2014) 0.49 (0.08) 62
D. salina
Lee et al. (2017)
0.07
a
╶
Chlorella sp.
Wang et al. (2016a, b)
0.148
180.3
Chlorella sp.
Zhen et al. (2016)
0.187
106.9 (3.2)
Scenedesmus
sp.—Chlorella sp.
a Modified first-order equation
Fig. 1 Simulation of the influence of the organic loading rate on the continuous anaerobic
degradation of raw and residual microalgae biomass
260
F. Passos et al.
parameter selection. Figure 1 shows the performance of a virtual anaerobic digester
operating in continuous mode with microalgae as a feedstock. The results obtained
from experiments investigating the AD of raw and residual microalgae were used to
perform the simulations (Fernández-Rodríguez et al. 2014; Neumann et al. 2015).
To this aim, the inlet COD was fixed at 50 gCOD/L and the volume of the reactor at
1000 m
3 , while the organic loading rate was increased by changing the inlet
microalgae flow rate. In addition, the macromolecular composition of the raw
microalgae was set at 58, 22 and 20% for proteins, carbohydrates and lipids,
respectively (Passos et al. 2015). The simulation considered an inert fraction of the
organic matter of 24%, estimated from the BMP results. The macromolecular
composition of the residual microalgae was set at 64.5, 31.3 and 4.2% for proteins,
carbohydrates and lipids, respectively (adapted from Neumann et al. 2015). In this
Table 5 Kinetic parameters from the first-order equation in the AD of microalgae
References
k H (1/d)
B max (mLCH 4 /gVS) Microalgae
Neumann et al. (2015)
0.09
413 (13)
B. braunii
Fernández-Rodríguez et al. (2014) 0.49 (0.08) 62
D. salina
Lee et al. (2017)
0.07
a
╶
Chlorella sp.
Wang et al. (2016a, b)
0.148
180.3
Chlorella sp.
Zhen et al. (2016)
0.187
106.9 (3.2)
Scenedesmus
sp.—Chlorella sp.
a Modified first-order equation
Fig. 1 Simulation of the influence of the organic loading rate on the continuous anaerobic
degradation of raw and residual microalgae biomass
260
F. Passos et al.