Evolution of Lignocellulosic Macrocomponents in the Wastewater Streams of a Sulfite Pulp Mill: A Preliminary Biorefining Approach
Table 2
Stoichiometric factors used to calculate the percentage of theoretical homopolymer.
Hydrolyzed constituents
Homopolymer
Carbohydrate contribution
Conversion factora
Hydrolysis factorb g.sugar/g.polymer
Ethanol factorc g.EtOH/g.monomer
Glucose
Glucan
Cellulose
162/180
1.11b
0.511
HMF
Glucan
Cellulose
162/126
—
—
Levulinic acid
Glucan
Cellulose
162/116
—
—
Cellobiose
Glucan
Cellulose
324/342
—
—
Xylose
Xylan
Hemicellulose
132/150
1.136
0.511
Furfural
Xylan
Hemicellulose
132/96
—
—
Formic acid
Xylan
Hemicellulose
132/46
—
—
Arabinose
Arabinan
Hemicellulose
132/150
1.136
0.511
Galactose
Galactan
Hemicellulose
162/180
1.11
0.511
Mannose
Mannan
Hemicellulose
162/180
1.11
0.511
Acetic acid
Acetyl
Hemicellulose
43/60
—
—
Stoichiometric factor used to calculate the percentage of theoretical homopolymer [22]. bHydrolysis stoichiometric factor of carbohydrate polymers into free sugars [40]. cEthanol stoichiometric factor describing the mass fraction of sugar monomer converted to ethanol [40].