Table 4.
Kinetic study of the effect of total organic carbon (TOC) concentration
| TOC (g/L) | CDM | PHA | Yield | μ | ρ | Productivity |
|---|---|---|---|---|---|---|
| (g/L) | Content (wt %) | (g PHA/g RCM) | (1/h) | (g PHA/g CDM/h) | [g PHA/(L h)] | |
| TOC 5 g/L | ||||||
| Acinetobacter sp. ASC1 | 12.0 ± 0.1 | 15.6 ± 1.7 | 0.19 | 0.033 | 0.007 | 0.05 |
| Pseudomonas sp. ASC2 | 12.2 ± 0.2 | 22.4 ± 2.4 | 0.29 | 0.031 | 0.012 | 0.08 |
| Enterobacter sp. ASC3 | 13.0 ± 0.2 | 18.5 ± 3.2 | 0.23 | 0.035 | 0.009 | 0.07 |
| Bacillus sp. ASC4 | 8.7 ± 0.3 | 33.5 ± 1.2 | 0.5 | 0.018 | 0.018 | 0.08 |
| TOC 10 g/L | ||||||
| Acinetobacter sp. ASC1 | 23.5 ± 0.1 | 54.6 ± 3.4 | 0.49 | 0.023 | 0.014 | 0.36 |
| Pseudomonas sp. ASC2 | 32.3 ± 0.3 | 61.8 ± 3.3 | 0.65 | 0.047 | 0.022 | 0.55 |
| Enterobacter sp. ASC3 | 33.1 ± 0.2 | 47.2 ± 2.2 | 0.57 | 0.042 | 0.01 | 0.43 |
| Bacillus sp. ASC4 | 13.2 ± 0.4 | 47.4 ± 1.5 | 0.51 | 0.022 | 0.017 | 0.17 |
| TOC 20 g/L | ||||||
| Acinetobacter sp. ASC1 | 27.3 ± 0.2 | 23.4 ± 2.7 | 0.31 | 0.023 | 0.014 | 0.18 |
| Pseudomonas sp. ASC2 | 24.2 ± 0.1 | 39.4 ± 1.6 | 0.58 | 0.044 | 0.03 | 0.27 |
| Enterobacter sp. ASC3 | 27.3 ± 0.2 | 30.0 ± 2.2 | 0.42 | 0.051 | 0.02 | 0.15 |
| Bacillus sp. ASC4 | 21.8 ± 0.5 | 33.8 ± 2.4 | 0.41 | 0.023 | 0.023 | 0.2 |
Cells were grown in production medium with a carbon to nitrogen ratio of 200 in batch cultivation