Advances in Environmental Chemistry / 2014 / Article / Tab 2

Research Article

Experimental Design of Photo-Fenton Reactions for the Treatment of Car Wash Wastewater Effluents by Response Surface Methodological Analysis

Table 2

Range and levels of natural and corresponding coded variables for RSM.

VariableSymbolsRange and levels
NaturalCoded−101

Fe2+ (mg/L)304050
H2O2 (mg/L)350400450
pH3.568.5