Kinetics-based development of two-stage continuous fermentation of 1,3-propanediol from crude glycerol by Clostridium butyricum

Table 3 The experimental results in the third stage continuous fermentations

First stage		Second stage	The third stage continuous fermentation
S_f	\(D_{1}\)	\(D^{\prime}_{2}\)	\(D^{\prime}_{3}\)	\(C_{{3\;{\text{S}}}}\)	Biomass	1,3-PDO	Butyrate	Acetate	Lactate	\(Q_{{3_{{{\text{Biomass}}}} }}\)	\(Q_{{3_{{{\text{PDO}}}} }}\)
(g/L)	(h⁻¹)	(h⁻¹)	(h⁻¹)	(g/L)						(g/(L·h))
90	0.222	0.174	0.133	4.90 ± 0.19	4.76 ± 0.10	74.25 ± 1.32	16.86 ± 0.22	5.38 ± 0.10	3.08 ± 0.25	− 0.05	1.37
	0.256	0.199	0.152	6.69 ± 0.60	4.80 ± 0.29	73.86 ± 0.47	15.10 ± 0.30	5.36 ± 0.24	2.74 ± 0.28	− 0.04	2.04
	0.279	0.216	0.165	3.92 ± 0.38	4.62 ± 0.13	73.11 ± 0.56	15.01 ± 0.13	6.04 ± 0.21	2.64 ± 0.22	− 0.11	2.30
	0.321	0.246	0.190	5.83 ± 0.97	4.88 ± 0.29	70.40 ± 0.58	13.05 ± 0.27	6.52 ± 0.14	2.11 ± 0.08	− 0.03	2.71
110	0.148	0.119	0.090	4.34 ± 0.43	4.11 ± 0.37	74.01 ± 1.07	17.40 ± 0.33	6.15 ± 0.23	4.83 ± 1.02	− 0.06	0.47
	0.167	0.133	0.102	5.87 ± 0.80	5.62 ± 0.20	80.50 ± 1.53	18.63 ± 1.51	4.71 ± 0.39	2.53 ± 0.37	− 0.05	1.33
	0.173	0.135	0.102	5.32 ± 0.62	4.03 ± 0.21	74.72 ± 1.00	16.68 ± 0.34	7.26 ± 0.24	2.28 ± 0.15	− 0.08	0.82
	0.200	0.152	0.116	5.40 ± 0.98	3.91 ± 0.21	74.09 ± 0.26	15.50 ± 0.40	7.31 ± 026	1.61 ± 0.19	− 0.07	1.26
130	0.143	0.110	0.083	6.89 ± 0.67	3.13 ± 0.10	78.51 ± 0.54	19.54 ± 0.37	5.25 ± 0.15	3.17 ± 0.40	− 0.12	0.32

ISSN: 2731-3654