|
Metabolitesa (g COD l−1)
|
H
b2
(g COD l−1)
|
Cellulose (g COD l−1)
|
Biomassc (g COD l−1)
|
Total COD (g COD l−1)
|
COD balanced (%)
|
Theoretical H2 (ml)
|
Experimental H2 (ml)
|
Difference (%)
|
---|
From acetic acid
|
From butyric acid
|
Total
|
---|
Mono
|
Initial
|
0.01
|
0
|
2.55
|
0.01
|
2.57
|
97
|
247
|
0
|
247
|
245
|
1
|
Final
|
1.08
|
0.31
|
0.49
|
0.61
|
2.49
|
Co
|
Initial
|
0.19
|
0
|
2.55
|
0.02
|
2.76
|
108
|
136
|
186
|
322
|
324
|
0
|
Final
|
1.79
|
0.41
|
0.17
|
0.63
|
3
|
-
aMetabolites COD accounts for the sum of acetate, butyrate, lactate, formate and ethanol as g COD l−1
-
bCalculated based on 8 g COD g−1 H2
-
cBiomass COD was calculated by multiplying dry weight (g l−1) × 0.9 × 1.42 (g COD g−1 biomass)
-
dCOD mass balance = (Final TCOD/Initial TCOD) × 100 %