Determination of Important Parameters in Affecting the Uptake of Reactive Black 5 by Chitosan Beads through Statistical Approach

Table 3

Plackett-Burman design and results for the uptake of RB5 by chitosan beads.

No.	Agitation rate (rpm)	Chitosan dosage (g)	Concentration (mg/L)	pH	Predicted response (%)	Observed response (%)
1	100.00	0.10	25.00	12.00	7.16	8.95
2	200.00	1.00	25.00	12.00	26.99	31.27
3	100.00	1.00	100.00	12.00	6.91	5.13
4	197.32	0.74	70.75	11.89	13.24	9.52
5	103.02	0.20	40.42	11.95	6.24	10.02
6	125.42	0.12	43.26	3.25	84.04	89.32