IWA Publishing

Table 2

Experimental design and results

Run	(A) H₂O₂ concentration (g/L)	(B) Reaction time (min)	(C) Initial pH	(D) Fe/C dosage (g/L)	(Y₁) COD removal rate (%)
1	11.1	180	3	400	45.84
2	8.88	240	3	400	57.48
3	8.88	180	1.5	1,200	71.04
4	8.88	180	3	800	72.38
5	8.88	180	1.5	400	73.46
6	8.88	180	4.5	400	43.27
7	8.88	120	4.5	800	46.19
8	6.66	180	4.5	800	45.76
9	6.66	180	1.5	800	71.25
10	8.88	180	3	800	69.72
11	8.88	120	3	400	56.49
12	8.88	120	1.5	800	69.84
13	11.1	240	3	800	54.65
14	8.88	180	3	800	68.29
15	8.88	240	4.5	800	48.57
16	8.88	240	1.5	800	72.85
17	11.1	180	4.5	800	37.18
18	8.88	180	3	800	72.18
19	8.88	120	3	1,200	64.93
20	6.66	180	3	1,200	63.84
21	6.66	120	3	800	60.94
22	8.88	180	3	800	70.42
23	8.88	180	4.5	1,200	49.71
24	11.1	180	3	1,200	52.36
25	11.1	120	3	800	52.61
26	8.88	240	3	1,200	63.84
27	6.66	240	3	800	62.43
28	11.1	180	1.5	800	64.89
29	6.66	180	3	400	50.97

Run	(A) H₂O₂ concentration (g/L)	(B) Reaction time (min)	(C) Initial pH	(D) Fe/C dosage (g/L)	(Y₁) COD removal rate (%)
1	11.1	180	3	400	45.84
2	8.88	240	3	400	57.48
3	8.88	180	1.5	1,200	71.04
4	8.88	180	3	800	72.38
5	8.88	180	1.5	400	73.46
6	8.88	180	4.5	400	43.27
7	8.88	120	4.5	800	46.19
8	6.66	180	4.5	800	45.76
9	6.66	180	1.5	800	71.25
10	8.88	180	3	800	69.72
11	8.88	120	3	400	56.49
12	8.88	120	1.5	800	69.84
13	11.1	240	3	800	54.65
14	8.88	180	3	800	68.29
15	8.88	240	4.5	800	48.57
16	8.88	240	1.5	800	72.85
17	11.1	180	4.5	800	37.18
18	8.88	180	3	800	72.18
19	8.88	120	3	1,200	64.93
20	6.66	180	3	1,200	63.84
21	6.66	120	3	800	60.94
22	8.88	180	3	800	70.42
23	8.88	180	4.5	1,200	49.71
24	11.1	180	3	1,200	52.36
25	11.1	120	3	800	52.61
26	8.88	240	3	1,200	63.84
27	6.66	240	3	800	62.43
28	11.1	180	1.5	800	64.89
29	6.66	180	3	400	50.97