Optimization of Precious Metals Recovery from Electronic Waste by Chromobacterium violaceum Using Response Surface Methodology (RSM)

Table 5

Point prediction and experimental recovery of precious metals (Au and Ag) under optimal statistical conditions for model validation and accuracy.

Response	X1, oxygen level (mgL^−1)	X2, E-wastepulp density (%)	X3, glycine concentration (mgL^−1)	Predicted response (%)	Actual response (%)
Au recovery	0.56	1.95	2.49	61.32	62.40
Ag recovery	0.52	1.77	3.40	9.99	10.33