Table 1 Six digesters were screened cytometrically
Digester | Substrate | Process parameters | F420+ | ||||
|---|---|---|---|---|---|---|---|
HRT [day] | OLR [g L−1 day−1] | Temp. [°C] | Stirring [min−1] | Cell number [mL−1] (± standard dev.) | Autofluorescence intensity (± standard dev.) | ||
A | Disintegrated straw | 60 | 2.5 | 40 | 100 | 1.24 × 109 (± 4.98 × 108) | 33.57 (± 0.85) |
B | Whole-plant rye silage | 40 | 2.5 | 40 | 200 | 4.50 × 108 (± 6.85 × 106) | 40.20 (± 2.31) |
C | Corn silage | 150 | 2.5 | 40 | 100 | 3.60 × 109 (± 1.46 × 108) | 21.90 (± 0.56) |
D | Chicken manure | 60 | 2 | 30 | 100 | 2.40 × 109 (± 2.04 × 108) | 38.13 (± 5.89) |
E | Chicken manure | 60 | 2 | 39 | 100 | 9.14 × 108 (± 4.66 × 107) | 35.70 (± 3.22) |
F | Common duckweed | 40 | 1 | 40 | 70 | 6.17 × 107 (± 2.42 × 106) | 33.03 (± 2.34) |
G | Elodea nuttallii | 285 | 2.7 | 37 | 160 | 1.02 × 109 (± 1.80 × 108) | 26.37 (± 0.50) |
H | Synthetic organic acids | 8 | 4.65 | 37 | 50 | 2.23 × 109 (± 8.60 × 107) | 48.73 (± 0.49) |