Research Article
Experimental Design of Photo-Fenton Reactions for the Treatment of Car Wash Wastewater Effluents by Response Surface Methodological Analysis
Table 5
ANOVA coefficient of regression and
checking
1.
| Variable | Standard deviation | | | Coefficient |
| | 2.405956 | 2.691238 | 0.043235 | 6.475 | | 2.405956 | 0.249381 | 0.812987 | 0.6 | | 2.405956 | −3.20039 | 0.023985 | −7.7 | | 3.541472 | 8.704009 | 0.000331 | 30.825 | | 3.402536 | −1.61644 | 0.166922 | −5.5 | | 3.402536 | −0.22042 | 0.834259 | −0.75 | | 3.541472 | 6.953324 | 0.000945 | 24.625 | | 3.402536 | 0.543712 | 0.609995 | 1.85 | | 3.541472 | 7.673364 | 0.000599 | 27.175 |
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: coefficient of determination; values were 0.97 for COD percent removal.
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