Table 2.

The experimental runs designated by CCD

		Factor 1	Factor 2	Factor 3	Factor 4	Response 1
Std	Run	X1: Time	X2: pH	X3: BSA Con.	X4: Cat. Dose	BSA Removal
		min	–	mg/L	mg/100 mL	%
13	1	35	5	50	20	54
8	2	95	9	50	10	25
28	3	65	7	35	15	42
2	4	95	5	20	10	75
20	5	65	11	35	15	6
24	6	65	7	35	25	51
26	7	65	7	35	15	32
5	8	35	5	50	10	43
15	9	35	9	50	20	25
14	10	95	5	50	20	54
19	11	65	3	35	15	70
4	12	95	9	20	10	23
22	13	65	7	65	15	46
10	14	95	5	20	20	83
6	15	95	5	50	10	56
25	16	65	7	35	15	37
9	17	35	5	20	20	71
17	18	5	7	35	15	42
23	19	65	7	35	5	40
27	20	65	7	35	15	35
1	21	35	5	20	10	68
3	22	35	9	20	10	11
21	23	65	7	5	15	56
12	24	95	9	20	20	43
7	25	35	9	50	10	16
16	26	95	9	50	20	43
11	27	35	9	20	20	26
29	28	65	7	35	15	31
18	29	125	7	35	15	60
30	30	65	7	35	15	36