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Table 1 Acetone–butanol–ethanol fermentation in SHFand SSF

From: Effect of residual extractable lignin on acetone–butanol–ethanol production in SHF and SSF processes

 SHFSSF
OPLP-UWOPLP-WOPLP-W/EOLOPLP-UWOPLP-WOPLP-W/PHa
Residual glucose (g/L)5.06 ± 0.1319.42 ± 0.514.30 ± 0.2530.93 ± 0.021.36 ± 0.330.59 ± 0.36
Butanol (g/L)8.16 ± 0.531.69 ± 0.257.60 ± 0.392.13 ± 0.059.29 ± 0.2110.51 ± 0.18
Butanol yield (g/g)0.14 ± 0.010.03 ± 0.000.13 ± 0.010.04 ± 0.000.16 ± 0.000.15 ± 0.00
ABE (g/L)11.89 ± 0.122.66 ± 0.3310.56 ± 0.223.65 ± 0.0515.74 ± 0.3318.29 ± 0.22
ABE yield (g/g)0.20 ± 0.000.04 ± 0.010.18 ± 0.000.06 ± 0.000.27 ± 0.010.26 ± 0.01
Butyric acid (g/L)3.89 ± 0.416.52 ± 0.074.41 ± 0.502.62 ± 0.311.21 ± 0.071.68 ± 0.04
Acetic acid (g/L)3.99 ± 0.314.25 ± 0.054.13 ± 0.482.74 ± 0.201.71 ± 0.061.80 ± 0.01
Acid crashNoYesNoYesYesbNo
  1. Data are presented as the final point in fermentation processes, SHF, 96 h; SSF for OPLP-UW and OPLP-W, 183 h; SSF for OPLP-W/PH, 132 h. The value was presented as mean value ± standard deviation
  2. aOPLP-W/PH: ethanol-washed OPLP with detoxified prehydrolysates
  3. bFermentation recommenced after acid crash