Study of Montmorillonite Clay for the Removal of Copper (II) by Adsorption: Full Factorial Design Approach and Cascade Forward Neural Network

Table 1

Chemical compositions of the materials.

Components	w/w (%)
	Montmorillonite	Industrial waste
Na2O	1.71	2.04
MgO	3.96	1.85
Al2O3	18.64	3.01
SiO2	64.11	23.18
CaO	2.37	11.21
K2O	0.50	0.37
Fe2O3	3.01	39.17
ZnO	—	14.15
CuO	—	0.71
SO3	—	7.09