Table 4 Comparison between microwave-assisted batch and fast heating rate flow-through reaction systems: effect of processing time on the product concentrations
Reaction conditions | Monomer conc. | Oligomer/polymer conc. | Degradation product conc. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Exp. | T (°C) | t (min) | τ (min) | Q (mL/min) | Mb/Vw (g/L) | Log (KSFS) | Log (KSFL) | Glu (g/L) | Xyl (g/L) | Arab (g/L) | ASL (g/L) | Olig (Cell) (g/L) | Olig (Hemi) (g/L) | Acet (g/L) | Lev (g/L) | HMF (g/L) | F (g/L) | FA (g/L) |
2FT | 200 | 20 | 4.3 | 7.0 | 50 | 4.25 | 3.58 | 0.2 | 1.8 | 0.4 | 3.8 | 0.6 | 9.3 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |
3FT | 200 | 40 | 8.6 | 3.5 | 50 | 4.55 | 3.88 | 1.3 | 4.5 | 0.4 | 3.1 | 1.6 | 4.5 | 2.3 | 0.0 | 0.3 | 0.4 | 0.8 |
4FT | 200 | 20 | 8.6 | 3.5 | 100 | 4.25 | 3.88 | 0.5 | 6.7 | 0.8 | 3.7 | 1.2 | 13.5 | 1.5 | 0.0 | 0.0 | 0.6 | 0.6 |
2MW | 200 | 20 | – | – | 50 | 4.25 | 4.25 | 0.9 | 4.8 | 1.6 | 2.2 | 1.1 | 2.3 | 0.2 | 0.7 | <0.1 | 0.0 | 0.0 |
3MW | 200 | 40 | – | – | 50 | 4.55 | 4.55 | 1.9 | 3.9 | 0.0 | 4.1 | 0.0 | 0.0 | 0.0 | 3.0 | 0.2 | 0.5 | 0.0 |
4MW | 200 | 20 | – | – | 100 | 4.25 | 4.25 | 1.5 | 8.8 | 1.3 | 3.1 | 1.4 | 1.3 | 0.0 | 2.6 | 0.0 | 0.7 | 0.0 |