Methylene Blue Adsorption BY UV-Treated Graphene Oxide Nanoparticles (UV/n-GO): Modeling and Optimization Using Response Surface Methodology and Artificial Neural Networks

Table 1

Levels of different process variables in coded and uncoded forms for adsorption.

Variables	Name of the process variables	Ranges and levels
		−2	−1	0	1	2
A	Time, min	10	20	30	40	50
B	Adsorbent dosage, , g/L	0.1	0.2	0.3	0.4	0.5
C	Initial concentration of dye in the aqueous solution, Co, mg/L	10	15	20	25	30
D	pH of the aqueous solution	5	6	7	8	9