Research Article
Biodegradation of Polyethoxylated Nonylphenols
Table 3
Physical chemical parameters of the 0.0605 M NPEO15 degradation by Pseudomonas fluorescens strain Yas2.
| Incubation time (h) | Flow time (s)* | Remaining NPEO (moles L−1) | Density (g L−1)** | Viscosity (g cm−1 s−1) |
| 0 | 283.9 | 0.0605 | 1.0200 | 1.1500 | 6.0 | 278.9 ± 1.969† | 0.0552 | 1.0064 ± 0.001† | 1.1152 | 12.0 | 280.9 ± 2.320 | 0.0573 | 1.0067 ± 0.002 | 1.1235 | 36.0 | 270.6 ± 1.056 | 0.0464 | 1.0141 ± 0.0047 | 1.0903 | 60.5 | 264.9 ± 1.357 | 0.0403 | 0.9805 ± 0.0132 | 1.0320 | 71.5 | 261.6 ± 1.069 | 0.0368 | 0.9098 ± 0.0029 | 0.9456 | 112.5 | 255.4 ± 0.853 | 0.0302 | 0.9190 ± 0.0053 | 0.9325 | 117.5 | 251.3 ± 0.506 | 0.0259 | 0.8714 ± 0.0365 | 0.8700 | 134.0 | 247.3 ± 2.573 | 0.0216 | 0.8641 ± 0.0216 | 0.8490 | 163.0 | 285.9 ± 1.354 | 0.0626 | 0.9855 ± 0.0488 | 1.1194 |
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Flow time of the FBF in the viscometer at 25°C, average of six measurements. **Average of four measurements. †Standard deviation.
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