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Table 1 Model parameters used for acetic, propionic, and butyric acid as well as hydrogen converting populations

From: Intermittent fasting for microbes: how discontinuous feeding increases functional stability in anaerobic digestion

 

Yield Y (gCODX gCOD −1S )

Maximum substrate utilization rate km (gCODS gCOD −1X  day−1)

Half saturation constant K (gCODS L−1)

Decay rate kdec

pH inhibition

References

Xac,1

0.033

20

0.32

0.02

pH_l = 4; pH_u = 5.5

This study

 

0.060

8.95

0.32

0.1

N/A

[26]

Xac,2

0.033

14.5

0.09

0.02

pH_l = 6.3; pH_u = 7

This study

 

0.042

2.77

0.09

0.0064

N/A

[26]

Xh2

0.032

35

7 × 10−6

0.02

pH_l = 5; pH_u = 6

This study

 

0.060

35

1 × 10−6

0.02

pH_l = 5; pH_u = 6

[52]

Xpro

0.012

30

0.1

0.02

N/A

This study

 

0.040

13

0.1

0.02

N/A

[52]

XC4

0.012

25

0.2

0.02

N/A

This study

 

0.060

20

0.2

0.02

N/A

[52]

  1. Xac,1 = Methanosarcina, Xac,2 = Methanosaeta, Xh2 = hydrogenotrophic methanogens, Xpro = propionic acid degraders, XC4 = butyric acid degraders, pH_l = lower limit and pH_u = upper limit for pH inhibition