Parameters

Factor A

Factor B

Factor C

Factor D

H2O2 dosage (mmol/L)

[H2O2]/[Fe2+] (molar ratio)

Initial pH

Reaction time (h)

Labels

A

B

C

D

Level 1

57.24

2

3

0.5

Level 2

66.78

3

4

1

Level 3

76.32

4

5

2