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Table 5 The performance of ABE fermentation with various citrate buffer strengths using JAS

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

  Sodium citrate buffer strengths (mM)
20 40 60 80 100
Initial glucose, g/L 8.0 21.9 45.9 47.2 48.9
Initial xylose, g/L 6.3 9.6 14.3 14.6 15.6
Reducing sugars, g/L 14.3 31.5 60.2 61.8 64.5
Residual glucose, g/L 0.1 0.4 11.7 10.7 10.9
Residual xylose, g/L 0.1 0.3 1.7 2.0 3.6
Maximum OD 1.7 1.8 2.2 1.8 1.8
Fermentation time, h 60 60 60 60 60
Acetone, g/L 1.0 3.0 5.4 5.2 5.0
Ethanol, g/L 0.15 0.10 0.17 0.18 0.17
Butanol, g/L 4.0 7.4 11.2 10.1 9.4
Total ABE, g/L 5.2 10.6 16.8 15.4 14.6
Butanol yield, g/g 0.28 0.24 0.24 0.21 0.19
Total ABE yield, g/g 0.37 0.34 0.36 0.31 0.29
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