Optimization Studies on Recovery of Metals from Printed Circuit Board Waste

Table 2

Box–Behnken experimental design table for recovery of lead.

Std	Run	Factor 1	Factor 2	Factor 3
		A: CD	B: solvent	C: time
		A/dm^2	ml	Hrs
1	8	1	400	2.5
2	9	19	400	2.5
3	17	1	700	2.5
4	12	19	700	2.5
5	1	1	550	1
6	14	19	550	1
7	6	1	550	4
8	5	19	550	4
9	4	10	400	1
10	10	10	700	1
11	7	10	400	4
12	11	10	700	4
13	2	10	550	2.5
14	16	10	550	2.5
15	13	10	550	2.5
16	15	10	550	2.5
17	3	10	550	2.5