Table 1 ANOVA for the second-order model of experiments.

From: Optimization of copper bioremoval from hypersaline environments by the halophilic archaeon Halalkalicoccus sp. Dap5 via response surface methodology

Source*

Sum of Squares

df

Mean Square

F-value

p-value

 

Model

12910.74

9

1434.53

397.96

< 0.0001

Significant

A-A

3582.31

1

3582.31

993.78

< 0.0001

Significant

B-B

1874.43

1

1874.43

519.99

< 0.0001

Significant

C-C

398.41

1

398.41

110.53

< 0.0001

Significant

AB

8.36

1

8.36

2.32

0.1587

Not significant

AC

236.10

1

236.10

65.50

< 0.0001

Significant

BC

201.40

1

201.40

55.87

< 0.0001

Significant

A²

1014.11

1

1014.11

281.34

< 0.0001

Significant

B²

1353.31

1

1353.31

375.43

< 0.0001

Significant

C²

2.93

1

2.93

0.8115

0.3889

Not significant

Residual

36.05

10

3.60

   

Lack of Fit

15.30

5

3.06

0.7378

0.6266

Not significant

Pure Error

20.74

5

4.15

   

Cor Total

12946.78

19

    

R2 = 0.9972

R2Adj = 0.9947

R2Pred = 0.9885

   
  1. * A: pH; B: Inoculation percentage; C: initial metal concentration. AB, AC, and BC represent interaction terms between the corresponding factors; A², B², and C² represent quadratic effects.
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