Optimization Studies on Recovery of Metals from Printed Circuit Board Waste

Table 5

Model terms in RSM for lead.

Term	Standard error	VIF	Ri^2	Power (%)
A	0.3536	1	0.0000	68.1
B	0.3536	1	0.0000	68.1
C	0.3536	1	0.0000	68.1
AB	0.5000	1	0.0000	40.8
AC	0.5000	1	0.0000	40.8
BC	0.5000	1	0.0000	40.8
A^2	0.4873	1.00588	0.0058	93.8
B^2	0.4873	1.00588	0.0058	93.8
C^2	0.4873	1.00588	0.0058	93.8