Table 3 ANOVA table for the regression model of Pb(II) biosoprtion.

From: Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

Source

DF

Adj SS

Adj MS

F-Value

p value

Model

9

1,288.60

143.178

38.44

0.000

Linear

3

754.96

251.652

67.55

0.000

A

1

297.77

297.765

79.93

0.000

B

1

38.02

38.024

10.21

0.024

C

1

419.17

419.167

112.52

0.000

Square

3

505.27

168.423

45.21

0.000

A*A

1

466.51

466.508

125.23

0.000

B*B

1

46.59

46.595

12.51

0.017

C*C

1

29.87

29.867

8.02

0.037

2-Way Interaction

3

28.38

9.460

2.54

0.170

A*B

1

3.27

3.274

0.88

0.392

A*C

1

23.07

23.069

6.19

0.055

B*C

1

2.04

2.036

0.55

0.493

Error

5

18.63

3.725

  

Lack-of-Fit

3

18.52

6.175

120.74

0.078

Pure Error

2

0.10

0.051

  

Total

14

1,307.23

   
  1. DF, SS, MS, F-value, and p value denote the degrees of freedom, sum of square, mean of square, F-statistic, and probability value, respectively.