International Journal of Photoenergy / 2012 / Article / Tab 2

Research Article

Photo-Fenton and Fenton Oxidation of Recalcitrant Industrial Wastewater Using Nanoscale Zero-Valent Iron

Table 2

Variable levels applied in the 2-level factorial design.

VariablesSymbol−10+1

H2O2 : CODχ 12 : 13.5 : 15 : 1
H2O2 : nZVIχ 22 : 18.5 : 115 : 1
Dosing modeχ 3123

Notations: +1(high level); 0 (centre point); −1 (lower level).

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