Advances in Environmental Chemistry / 2014 / Article / Tab 5

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 checking1.

VariableStandard deviationCoefficient

2.4059562.6912380.0432356.475
2.4059560.2493810.8129870.6
2.405956−3.200390.023985−7.7
3.5414728.7040090.00033130.825
3.402536−1.616440.166922−5.5
3.402536−0.220420.834259−0.75
3.5414726.9533240.00094524.625
3.4025360.5437120.6099951.85
3.5414727.6733640.00059927.175

: coefficient of determination; values were 0.97 for COD percent removal.