Table 1 Process conditions applied in the continuous operation of two parallel PFRs
From: Spatial monitoring of hydrolysis in a plug-flow bioreactor: a support for flexible operation?
Substrate | HRT (d) | Recirculation | Bioaugmentation | Period of operation (w) |
|---|---|---|---|---|
PFR1 | ||||
Maize silage | Start-up | – | – | 1–3 |
7 | 9–11 12–14 | |||
20% | ||||
14 | – | 4a–8 15–16/21–22 | ||
20% | Paenibacillus spp. | 17–20/23–26 | ||
– | 27–30 | |||
30% straw, MS | 31–35.5 36–40/43–46 | |||
Paenibacillus spp. | ||||
– | – | 41–42 | ||
66% straw, MS | 20% | 47–54 55–60/64–69 | ||
Paenibacillus spp. | ||||
10% 0% | – | 70–74 75–78/61–62 | ||
PFR2 | ||||
Maize silage | Start-up | – | – | 1–4 |
14 | 5a–8 9–13 | |||
20% | ||||
Process in PFR2 stopped. Restart after repair | ||||
30% straw, MS | Start-up | – | – | 20 |
14 | 20% | 21–26 27–32 | ||
21 | ||||
66% straw, MS | 20% | 34–45 46–51 | ||
14 | ||||