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Table 6 The parameters in kinetic models of 1,3-PDO production

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

Parameters

Optimized value

References

This worka

[19]a

[52]b

[21]a

[37]a

[53]c

μmax (h−1)

0.78

0.57

0.67

–

0.68

0.65

Ks (g/L)

0.116

1.66

0.026

–

–

12.8

\(C_{{\text{S}}}^{*}\) (g/L)

183.6

–

187.8

–

181.7

181.7

\(C_{{{\text{PDO}}}}^{*} \;{\text{(g/L)}}\)

122.8

–

71.5

–

69.7

66.4

\(C_{{{\text{Hbu}}}}^{*}\) (g/L)

27.54

–

–

–

24.7

–

\(m_{{\text{s}}}\) (g/g/h)

1.99

–

0.20

0.91

–

0.23

\(Y_{X/S}\) (g/g)

0.086

–

0.75

0.058

–

0.067

\(m_{{{\text{PDO}}}}\) (g/g/h)

0.90

–

− 0.20

0.38

–

0.23

\(Y_{{{\text{PDO}}/X}} \;{\text{(g/g)}}\)

6.91

–

5.15

8.41

–

7.3

\(m_{{{\text{HBu}}}}\) (g/g/h)

0.26

–

–

–

–

–

\(Y_{{{\text{HBu}}/X}}\) (g/g)

0.58

–

–

–

–

–

MRE (%)

Biomass formation

7.8

    
 

Substrate consumption

43.8

    
 

1,3-PDO formation

6.2

    
 

Butyrate formation

9.5

    
  1. aClostridium butyricum
  2. bKlebsiella pneumoniae
  3. cClostridium diolis