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Table 4

ANOVA for the Plackett–Burman design

FactorEffectSSF-value
− 1.94 6.46 … 
Initial COD (mg/L) 0.90 1.40 0.04 
6.62 75.18 … 
Electrical conductivity (μS/cm) − 0.34 0.20 0.01 
Applied cell voltage (V) − 1.14 2.23 0.06 
− 2.74 12.88 … 
UV lamp wavelength (nm) − 3.84 25.24 0.68 
H2O2 concentration (mM) − 1.35 3.12 0.08 
5.61 54.04 … 
Residence time (min) 8.31 118.41 3.19 
Initial pH − 12.31 259.82 7.00 
FactorEffectSSF-value
− 1.94 6.46 … 
Initial COD (mg/L) 0.90 1.40 0.04 
6.62 75.18 … 
Electrical conductivity (μS/cm) − 0.34 0.20 0.01 
Applied cell voltage (V) − 1.14 2.23 0.06 
− 2.74 12.88 … 
UV lamp wavelength (nm) − 3.84 25.24 0.68 
H2O2 concentration (mM) − 1.35 3.12 0.08 
5.61 54.04 … 
Residence time (min) 8.31 118.41 3.19 
Initial pH − 12.31 259.82 7.00 
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