Table 3.

Design of experiment based on RSM.

Run	Lamp (watt)	Time (min)	Dose Catalyst (mg)	pH	MB Concentration (mg/L)	Result (%)
1	100	40	10	4	10	12.67
2	200	40	10	4	10	40.84
3	100	80	10	4	10	38.02
4	200	80	10	4	10	69.01
5	100	40	20	4	10	16.9
6	200	40	20	4	10	43.66
7	100	80	20	4	10	33.8
8	200	80	20	4	10	66.19
9	100	40	10	8	10	59.45
10	200	40	10	8	10	93.24
11	100	80	10	8	10	95.94
12	200	80	10	8	10	93.24
13	100	40	20	8	10	59.45
14	200	40	20	8	10	89.18
15	100	80	20	8	10	74.32
16	200	80	20	8	10	89.19
17	100	40	10	4	20	23.27
18	200	40	10	4	20	54.71
19	100	80	10	4	20	43.39
20	200	80	10	4	20	81.13
21	100	40	20	4	20	13.8
22	200	40	20	4	20	51.57
23	100	80	20	4	20	35.22
24	200	80	20	4	20	74.8
25	100	40	10	8	20	59.66
26	200	40	10	8	20	91.4
27	100	80	10	8	20	85.7
28	200	80	10	8	20	96.09
29	100	40	20	8	20	30.7
30	200	40	20	8	20	73.94
31	100	80	20	8	20	54.33
32	200	80	20	8	20	86.5
33	50	60	15	6	15	18.86
34	250	60	15	6	15	56
35	150	20	15	6	15	26.95
36	150	100	15	6	15	74.7
37	150	60	5	6	15	64.7
38	150	60	25	6	15	49.68
39	150	60	15	2	15	0.64
40	150	60	15	10	15	96.66
41	150	60	15	6	5	90
42	150	60	15	6	25	59.5
43	150	60	15	6	15	66.08
44	150	60	15	6	15	64.7
45	150	60	15	6	15	66.6
46	150	60	15	6	15	67
47	150	60	15	6	15	67.3
48	150	60	15	6	15	67.3
49	150	60	15	6	15	58.13
50	150	60	15	6	15	54.065