Continuous n-valerate formation from propionate and methanol in an anaerobic chain elongation open-culture bioreactor

Table 4 Setup for the different phases of the continuous formation of valerate from propionate and methanol to study the effect of pH lowering on n-valerate formation

Phase conditions	Phase I	Phase II	Phase III	Phase IV
Hydraulic retention time (h)	42.3	95.2	95.2	95.2
Phase duration (days)	0–27	27–43	43–91	91–120
pH influent	7.0	7.0	5.8	5.5
pH reactor	6.4 ± 0.3	6.3 ± 0.2	5.8	5.5
CO₂ supply (mL/min)	0.18	0.18	0.36	0.40

ISSN: 2731-3654