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Table 2 Biofilm steady-state results obtained during low shear experiments

From: Succinic acid production with Actinobacillus succinogenes: rate and yield analysis of chemostat and biofilm cultures

Run no.

D (h −1 )

Glc out (g.L −1 )

ΔGlc (g.L −1 ) *1

SA (g.L −1 )

AA (g.L −1 )

FA (g.L −1 )

Suspended x (g.L −1 )

Total x (g.L −1 ) *2

Fraction cells in total x

SA/AA (g.g −1 )

FA/AA (g.g −1 )

Y Glc,SA (g.g −1 )

q SA (g.L −1 h −1 )

r SA (g.g −1 h −1 ) *3

Modified r SA (g.g −1 h −1 ) *4

1

0.5

14.9

26.1

18.16

5.56

2.26

0.0

26.1

0.52

3.3

0.4

0.70

9.2

0.35

0.69

2

0.6

19.0

21.9

15.56

5.12

2.44

0.0

28.9

0.65

3.0

0.5

0.71

8.6

0.30

0.46

3

0.6

18.8

22.8

15.85

5.29

2.47

1.0

28.3

0.59

3.0

0.5

0.70

9.6

0.34

0.58

4

0.7

26.5

15.1

11.27

3.40

1.29

0.2

15.5

0.57

3.3

0.4

0.75

8.0

0.52

0.91

5

0.9

28.3

13.1

9.72

3.23

1.64

0.2

15.0

0.55

3.0

0.5

0.74

9.0

0.60

1.10

6

1.0

23.1

15.2

10.36

4.21

2.86

0.0

17.0

0.58

2.5

0.7

0.68

10.2

0.60

1.03

7

1.0

21.0

17.1

12.25

4.59

3.01

0.0

27.3

0.64

2.7

0.7

0.71

12.5

0.46

0.71

8

1.7

31.0

11.1

7.41

2.63

1.75

0.0

17.0

0.49

2.8

0.7

0.67

12.9

0.76

1.54

9

1.9

34.9

6.8

4.47

1.90

1.42

0.0

13.2

0.26

2.3

0.7

0.66

8.5

0.64

2.49

10

1.9

33.5

8.4

5.29

2.23

1.69

0.8

25.3

0.20

2.4

0.8

0.63

10.2

0.40

2.00

11

2.2

30.4

11.2

7.67

2.79

1.76

0.0

25.7

0.50

2.7

0.6

0.69

17.1

0.66

1.33

  1. *1Effect of dilution due to NaOH dosing incorporated into the calculation.
  2. *2Including scrubbed biofilm and suspended cells.
  3. *3Based on total x.
  4. *4Based on estimated cellular mass.