Table 2 Multi-stage extraction lactic acid by [Bmim]BF4/glucose systems from synthetic solution and lignocellulosic biomass-derived broth at pH 2.0
Solution Stage | R | K | Y (%) | DM (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
LA | Glucose | IL | LA | Glucose | IL | Cell | Pigments | |||
Synthetic solution | 1st | 1.16 | 0.99 | 0.02 | 10.02 | 53.4 | 2.7 | 92.1 | – | – |
2nd | 1.11 | 0.99 | 0.02 | 11.40 | 52.2 | 2.5 | 92.7 | – | – | |
3rd | 1.04 | 1.00 | 0.02 | 12.27 | 50.8 | 1.8 | 92.7 | – | – | |
Total | – | – | – | – | 89.0 | 6.8 | 92.5 | – | – | |
Filtered broth | 1st | 1.12 | 0.87 | 0.02 | 12.40 | 49.2 | 1.8 | 93.3 | 84.9 | 72.8 |
2nd | 1.05 | 1.06 | 0.02 | 23.86 | 52.8 | 2.0 | 95.1 | 90.9 | 86.5 | |
3rd | 1.08 | 1.18 | 0.03 | 41.15 | 56.2 | 3.1 | 97.4 | 91.5 | 90.5 | |
Total | – | – | – | – | 89.5 | 6.6 | 95.2 | 70.6 | 57.0 | |
Unfiltered broth | 1st | 1.03 | 0.94 | 0.02 | 12.62 | 49.2 | 1.7 | 92.8 | 83.9 | 78.5 |
2nd | 1.02 | 1.10 | 0.01 | 33.99 | 52.1 | 1.1 | 97.1 | 88.8 | 90.0 | |
3rd | 0.95 | 1.51 | 0.02 | 54.04 | 58.2 | 1.4 | 98.0 | 91.9 | 92.7 | |
Total | – | – | – | – | 89.8 | 4.1 | 96.0 | 68.4 | 65.4 | |