Table 1.
Maximal volumetric productivities in various tubular reactor setups within 120 h biofilm process using Pseudomonas taiwanensis VLB120ΔCeGFP Δ04710. The dilution rate was calculated based on the total air and medium flow. In brackets, values are given solely for the medium flow. The maximal volumetric productivities were calculated as an average of at least two replicates
| No. | ID (mm) | Wall thickn. (mm) | Length (cm) | Medium flow (μl min−1) | Air flow (μl min−1) | Dilution rate (h−1) | Vol. styrene (ml) | Max. vol. productivity within 120 h (g Laq −1 day−1) | Problems during biofilm process |
|---|---|---|---|---|---|---|---|---|---|
| A | 3 | 1 | 40 | 100 | 100 | 4.2 (2.1) | 20 | 6.5 | |
| B | 3 | 1 | 40 | 250 | 1000 | 26.5 (5.3) | 20 | 38.9 | Tube connector clogging |
| C | 3 | 1 | 40 | 250 | 1000 | 26.5 (5.3) | 80 | 29.5 | Tube connector clogging; detachment of biofilm parts |
| D | 3 | 1 | 100 | 250 | 1000 | 10.6 (2.1) | 20 | 8.5 | Tube connector clogging; tubes kinked |
| E | 3 | 1 | 40 | 250 | 2000 | 47.8 (5.3) | 20 | 34.6 | |
| F | 2 | 0.3 | 200 | 250 | 2000 | 21.5 (2.4) | 80 | 76.6 | Detachment of biofilm parts; tubes broke occasionally; tubes kinked |
| G | 2 | 0.3 | 40 | 250 | 2000 | 107.4 (11.9) | 20 | 164.0 | Tubes broke occasionally |
| H | 1.5 | 0.75 | 40 | 250 | 2000 | 191.0 (21.2) | 20 | 92.0 |