The Scientific World Journal / 2019 / Article / Tab 2

Research Article

Optimization of the Production Parameters of Composites from Sugarcane Bagasse and Iron Salts for Use in Dye Adsorption

Table 2

Box-Behnken design (BBD) matrix with real and coded values of three factors studied, and response (qe) of each test performed.

RunIndependent VariablesDependent Variable
x1
Mass sugarcane bagasse/mass iron salt (g)
x2
Type of mixture sugarcane bagasse/iron salt
x3
Temperature (°C)
Response (y)
qe (mg g−1)

11:2 (-1)SB/IN (-1)500 (0)3.32

22:1 (1)SB/IN (-1)500 (0)0.51

31:2 (-1)SB/IA (1)500 (0)0.89

42:1 (1)SB/IA (1)500 (0)0.44

51:2 (-1)SB/IN-IA (0)400 (-1)5.39

62:1 (1)SB/IN-IA (0)400 (-1)2.60

71:2 (-1)SB/IN-IA (0)600 (1)0.00

82:1 (1)SB/IN-IA (0)600 (1)0.00

91:1 (0)SB/IN (-1)400 (-1)0.86

101:1 (0)SB/IA (1)400 (-1)0.55

111:1 (0)SB/IN (-1)600 (1)5.84

121:1 (0)SB/IA (1)600 (1)0.00

13 (CP)1:1 (0)SB/IN-IA (0)500 (0)3.87

14 (CP)1:1 (0)SB/IN-IA (0)500 (0)3.10

15 (CP)1:1 (0)SB/IN-IA (0)500 (0)4.30