Table 2. Values obtained in the biodegradation experiments with the mixture of seven phenolic compounds for COD (mg/l O2), total phenols (mg/l), pH and ecotoxicity (EC50-5 min (%). (The values are the arithmetic mean of at least two independent analyses).

Parameters
Time (hours)

COD
(mg/l O2)

pH

Ecotoxicity
(EC50-5 min %)

0

520

3.9

4.1

1

515

4.0

11.3

2

390

4.0

10.4

4

210

4.2

5.9

6

100

4.7

31.0

8

55

4.9

41.4

24

45

5.2

51.9


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