Evolution of Lignocellulosic Macrocomponents in the Wastewater Streams of a Sulfite Pulp Mill: A Preliminary Biorefining Approach
Table 4
Total carbohydrate content of the woody hydrolyzates.
Wood
SSL
Sulfite dissolving pulps (% w/w)
(% w/w)
(% w/w)
P1
P2
P3
P4
GLUCAN
42.25
5.67
89.0
87.3
89.9
91.3
Glucose
44.99 ± 2.13
4.12 ± 1.48
95.0 ± 3.81
93.7 ± 3.27
96.7 ± 2.42
98.1 ± 2.52
HMF
0.1 ± 0.03
0.02 ± 0.009
0.3 ± 0.001
0.3 ± 0.05
0.3 ± 0.002
0.3 ± 0.00
Levulinic acid
0.14 ± 0.03
0.01 ± 0.009
0.2 ± 0.09
0.2 ± 0.01
0.2 ± 0.02
0.4 ± 0.00
Cellobiose
1.51 ± 1.29
2.04 ± 0.16
3.1 ± 1.78
2.5 ± 1.95
2.4 ± 1.26
2.2 ± 1.84
XYLAN
13.27
19.15
5.3
4.5
1.7
1.5
Xylose
14.27 ± 0.47
21.43 ± 8.80
2.9 ± 0.67
2.7 ± 0.66
2.0 ± 0.42
1.7 ± 0.75
Furfural
0.2 ± 0.19
0.15 ± 0.055
0.4 ± 0.004
0.8 ± 0.02
0.1 ± 0.003
0.2 ± 0.001
Formic
0.15 ± 0.05
0.03 ± 0.028
0.3 ± 0.18
ND
ND
ND
ARABINAN
0.52
2.46
0.3
0.3
0.2
0.2
Arabinose
0.59 ± 0.36
2.79 ± 1.71
0.3 ± 0.13
0.4 ± 0.16
0.2 ± 0.09
0.3 ± 0.16
GALACTAN
7.36
3.03
0.4
0.3
0.3
0.4
Galactose
8.18 ± 1.53
3.36 ± 1.52
0.4 ± 0.09
0.4 ± 0.06
0.3 ± 0.09
0.4 ± 0.26
MANNAN
1.00
1.28
ND
ND
ND
ND
Mannose
0.011
1.42 ± 0.50
ND
ND
ND
ND
ACETYL
2.78
4.51
0.2
ND
ND
ND
Acetic
3.87 ± 0.32
6.30 ± 1.70
0.3 ± 0.24
ND
ND
ND
TCC (%)
67.18
36.09
95.2
92.4
91.8
93.4
aEtOH (L/Kg.dw)
0.467
0.231
0.684
0.665
0.662
0.672
bEtOH (L/Kg.dw)
0.441
0.215
0.639
0.630
0.642
0.651
EtOH (L/Kg.dry sample) calculated from the homopolymers using hydrolysis and fermentation factors. bEtOH (L/Kg.dry sample) calculated from the monomers using fermentation factors.
