| | |
pH
| |
|---|
| |
8
|
7
|
6
|
5.5
|
|---|
|
μ
max (h-1)
|
1.50 ± 0.05
|
1.34 ± 0.05
|
0.53 ± 0.01
|
0.45 ± 0.06
|
|
Biomass concentration (gCDW/l)
|
0.95 ± 0.01
|
0.95 ± 0.06
|
0.76 ± 0.01
|
0.42 ± 0.01
|
|
q
glucose
a (mmol/gCDW/h)
|
19.6 ± 1.4
|
20.6 ± 0.1
|
14.3 ± 0.1
|
14.0 ± 0.2
|
|
YX/ATP (gCDW/mol ATP)
|
15.4 ± 0.7
|
15.2 ± 0.4
|
6.8 ± 0.2
|
6.0 ± 0.4
|
|
YATP/S (mol ATP/mol glucose)
|
2.81 ± 0.02
|
3.05 ± 0.03
|
3.54 ± 0.33
|
3.60 ± 0.09
|
|
H2 accumulation (mmol H2/l)
|
68.0 ± 1.3
|
64.2 ± 1.1
|
106.0 ± 2.3
|
91.7 ± 0.4
|
|
Q
H2 (mmol H2/l/h)
|
25.2 ± 1.2
|
21.0 ± 1.3
|
14.9 ± 0.2
|
13.0 ± 0.9
|
|
Product yield (mol/mol glucose)
| | | | |
|
YX
b
|
1.29 ± 0.05
|
1.37 ± 0.07
|
1.04 ± 0.01
|
0.62 ± 0.02
|
|
YH2
b
|
1.90 ± 0.01
|
1.69 ± 0.03
|
2.97 ± 0.10
|
2.48 ± 0.03
|
|
YA
b
|
1.04 ± 0.01
|
1.02 ± 0.04
|
1.33 ± 0.08
|
1.28 ± 0.04
|
|
YF
b
|
0.45 ± 0.01
|
0.37 ± 0.11
|
0.14 ± 0.02
|
0.19 ± 0.01
|
|
YE
b
|
0.35 ± 0.01
|
0.48 ± 0.05
|
0.20 ± 0.01
|
0.36 ± 0.03
|
|
RVEP
c
|
2.60 ± 0.03
|
2.65 ± 0.13
|
3.36 ± 0.09
|
3.19 ± 0.02
|
|
HAc/EtOH
|
2.96 ± 0.11
|
2.15 ± 0.30
|
6.83 ± 0.67
|
3.60 ± 0.14
|
|
Carbon recovery (%)
|
88.6 ± 1.1
|
99.8 ± 1.5
|
100.7 ± 2.8
|
93.5 ± 1.6
|
|
Redox recovery (%)
|
94.4 ± 0.6
|
99.2 ± 0.7
|
98.4 ± 3.2
|
93.6 ± 2.1
|
-
aSpecific glucose consumption rate measured during exponential phase.
-
bY indicates the yield of product (where x=biomass, H2=hydrogen, A=acetate, F=formate and E=ethanol) per mole of glucose consumed.
-
cTotal molar reduction values of reduced end-products (RVEP = YH2 + 2 * YE) [19].
