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

∗Flow time of the FBF in the viscometer at 25°C, average of six measurements. **Average of four measurements. ^†Standard deviation.