Table 6

ANOVA for quartic model for the degradation rate constant (response Y)

SourceSum of squaresdfMean squareF-valuep-valueComment
Model 9.767 × 10−3 14 9.767 × 10−3 15.80 <0.0001 Significant 
Photocatalyst loading (A) 6.000 × 10−5 1 6.000 × 10−5 1.36 0.2575  
H2O2 concentration (B) 9.232 × 10−4 1 9.232 × 10−4 20.91 0.0002  
AB 8.363 × 10−7 1 8.363 × 10−7 0.019 0.8919  
A2 1.583 × 10−3 1 1.583 × 10−3 35.85 <0.0001  
B2 1.032 × 10−5 1 1.032 × 10−5 0.23 0.6340  
A2B 2.084 × 10−6 1 2.084 × 10−6 0.047 0.8302  
AB2 9.435 × 10−6 1 9.435 × 10−6 0.21 0.6489  
A3 1.261 × 10−5 1 1.261 × 10−5 0.29 0.5989  
B3 1.537 × 10−3 1 1.537 × 10−3 34.81 <0.0001  
A2B2 2.223 × 10−4 1 2.223 × 10−4 5.03 0.0363  
A3B 5.991 × 10−8 1 5.991 × 10−8 1.357 × 10−3 0.9710  
AB3 1.169 × 10−6 1 1.169 × 10−6 0.026 0.8724  
A4 1.054 × 10−3 1 1.054 × 10−3 23.86 <0.0001  
B4 4.938 × 10−4 1 4.938 × 10−4 11.18 0.0032  
Residual 8.832 × 10−4 20 4.416 × 10−5    
Corr total 0.011 34     
SourceSum of squaresdfMean squareF-valuep-valueComment
Model 9.767 × 10−3 14 9.767 × 10−3 15.80 <0.0001 Significant 
Photocatalyst loading (A) 6.000 × 10−5 1 6.000 × 10−5 1.36 0.2575  
H2O2 concentration (B) 9.232 × 10−4 1 9.232 × 10−4 20.91 0.0002  
AB 8.363 × 10−7 1 8.363 × 10−7 0.019 0.8919  
A2 1.583 × 10−3 1 1.583 × 10−3 35.85 <0.0001  
B2 1.032 × 10−5 1 1.032 × 10−5 0.23 0.6340  
A2B 2.084 × 10−6 1 2.084 × 10−6 0.047 0.8302  
AB2 9.435 × 10−6 1 9.435 × 10−6 0.21 0.6489  
A3 1.261 × 10−5 1 1.261 × 10−5 0.29 0.5989  
B3 1.537 × 10−3 1 1.537 × 10−3 34.81 <0.0001  
A2B2 2.223 × 10−4 1 2.223 × 10−4 5.03 0.0363  
A3B 5.991 × 10−8 1 5.991 × 10−8 1.357 × 10−3 0.9710  
AB3 1.169 × 10−6 1 1.169 × 10−6 0.026 0.8724  
A4 1.054 × 10−3 1 1.054 × 10−3 23.86 <0.0001  
B4 4.938 × 10−4 1 4.938 × 10−4 11.18 0.0032  
Residual 8.832 × 10−4 20 4.416 × 10−5    
Corr total 0.011 34     
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