Fabrication and Response Surface Methodology for the Adsorption of Nickel Ferrite-Graphene Oxide Nanocomposite for the Removal of Methylene Blue from Water

Table 14

The elemental compositions in NGO before and after MB adsorption.

Element	NGO	NGO_MB
C	49.59	35.06
O	28.03	33.76
Fe	14.63	18.10
Ni	7.75	10.39
S	—	2.61
Cl	—	0.08