From: Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study
Variables
Code
Levels
 − 1
0
1
Ph
A
5
7
9
Dye concentration (mg/L)
B
50
100
Temperature (°C)
C
30
35
40
Contact time (h)
D
24
48
72