Skip to main content

Table 2 Pulp composition and total solids, lignin, hemicellulose, and cellulose recoveries after AWO

From: Production of high concentrated cellulosic ethanol by acetone/water oxidized pretreated beech wood

Run no. Exp. Cond.a Constituents in pulp (wt%) Constituents recovery in solid pulp (wt%)
AIL ASL Total lignin Cellulose Hemicellulose Total pulp Lignin Hemicel. Cellulose
Beechwoodb   21.5 2.7 24.2 43.1 20.2     
1 0, 0, 175, 2, 20 33.7 1.7 35.4 59.7 3.9 67.5 98.8 12.9 93.5
2 0, 8, 175, 2, 19 36.4 1.4 37.8 58.7 3.2 65.8 103.1 10.3 89.7
3 1:0, 0, 175, 2, 22 22.8 3.5 26.3 46.6 21.8 94.7 103.0 102.4 102.0
4 1:0, 4, 175, 2, 22 21.8 3.4 25.2 47.5 22.1 92.9 96.9 102.2 101.6
5 1:0, 9, 175, 2, 22 21.4 3.2 24.6 47.1 22.2 93.4 95.2 102.4 102.2
6 1:1, 0, 175, 2, 27 17.6 2.1 19.7 64.6 15.7 69.9 56.8 54.3 104.8
7 1:1, 10, 175, 2, 25 11.1 1.7 12.8 74.8 16.7 59.3 31.4 49.1 103.0
8 3:1, 10, 175, 2, 25 13.9 2.3 16.2 57.0 23.8 73.3 49.0 86.3 97.1
9 3:1, 23, 175, 2, 58 3.2 1.5 4.7 75.2 16.9 50.3 9.7 41.9 87.8
10 1:1, 25, 175, 2, 64 1.0 1.2 2.2 85.9 10.8 45.9 4.2 24.5 91.6
11 1:3, 25, 175, 2, 64 11.5 1.0 12.5 84.1 5.2 46.1 23.9 11.8 90.0
12 3:1, 29, 200, 1, 74 10.0 1.0 11.0 72.4 7.4 43.4 19.8 15.8 72.9
13 3:1, 31, 200, 0.5, 78 7.1 1.3 8.4 70.2 11.4 46.5 16.1 26.2 75.8
14 3:1, 55, 225, 0.5, 139 7.8 1.0 8.8 74.6 7.0 40.8 14.9 14.0 70.7
15 1:1, 10, 175, 2, 24 8.4 0.5 8.9 79.5 4.0 42.9 15.8 8.5 79.2
16 3:1, 10, 175, 2, 25 13.4 0.7 14.1 73.6 4.2 45.6 26.5 9.5 78.0
  1. aExperimental conditions are presented rounded for brevity in the following order: acetone/water (wt/wt) ratio, partial O2 pressure at reaction T (atm), reaction T (°C), reaction time (h), pressure at reaction T (atm)
  2. bBeechwood also had extractives measured according to NREL of 11.23 wt%