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Table 2 The performance of enzymatic hydrolysis and ABE fermentations using JAS hydrolysate pretreated by different NaOH–H2O2 concentrations

From: The advanced strategy for enhancing biobutanol production and high-efficient product recovery with reduced wastewater generation

  2%NaOH 4%NaOH–H2O2 (3%, v/v) 2%NaOH–H2O2 (3%, v/v) 2%NaOH–H2O2 (6%, v/v) 2%NaOH–H2O2 (9%, v/v)
Initial glucose, g/L 36.5 41.6 40.3 48.3 45.4
Initial xylose, g/L 9.2 11.0 10.5 11.6 11.1
Initial Cellobiose, g/L 3.9 3.5 5.0 4.2 5.6
Initial Arabinose, g/L 2.4 2.3 2.5 2.0 2.1
Residual glucose, g/L 3.3 3.5 6.0 11.1 7.3
Residual xylose, g/L 2.0 1.2 2.6 2.7 2.5
Maximum OD 2.1 2.5 2.4 2.6 2.2
Fermentation time, h 60 60 60 60 60
Acetone, g/L 5.8 5.3 4.9 6.0 5.2
Ethanol, g/L 0.14 0.14 0.13 0.16 0.15
Butanol, g/L 9.0 10.2 9.7 11.0 10.5
Total ABE, g/L 14.7 15.5 14.4 17.0 16.3
Butanol yield, g/g 0.22 0.22 0.23 0.24 0.23
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