Table 3.

RSM design in CCD and actual and predicted value of PPMPs removal

Run	PPMPs size (mm)	pH	PACl dosage (ppm)	PAM dosage (ppm)	Removal (%)
					Predicted	Actual
1	0.85	6	400	13	6.39	6
2	0.85	6	800	13	6.39	6
3	2.05	6	800	13	1.85	2
4	2.05	6	400	13	1.85	3
5	2.65	7	600	16	0.27	1
6	1.45	7	600	16	7.19	7
7	1.45	7	600	16	7.19	7
8	2.05	6	800	19	3.60	3
9	1.45	7	600	16	7.19	8
10	1.45	7	600	10	3.47	4
11	1.45	7	1000	16	7.19	6
12	0.85	8	400	19	12.93	13
13	2.05	8	400	13	1.89	1
14	0.85	6	800	19	8.14	7
15	1.45	7	600	16	7.19	7
16	1.45	7	200	16	7.19	9
17	2.05	6	400	19	3.60	2
18	1.45	7	600	22	6.97	9
19	1.45	7	600	16	7.19	8
20	0.25	7	600	16	14.10	16
21	2.05	8	400	19	3.64	3
22	2.05	8	800	19	3.64	2
23	1.45	5	600	16	2.80	3
24	1.45	9	600	16	7.64	10
25	0.85	8	800	19	12.93	12
26	0.85	8	400	13	11.18	11
27	1.45	7	600	16	7.19	8
28	0.85	8	800	13	11.18	8
29	0.85	6	400	19	8.14	8
30	2.05	8	800	13	1.89	2