Research Article

Supported Zinc Oxide Photocatalyst for Decolorization and Mineralization of Orange G Dye Wastewater under UV365 Irradiation

Table 3

The first-order reaction rate constant k (102 min−1) for operating parameter of pH and duration.

Effect of initial pHDuration test
pHk Cyclek

23.7414.41
33.7423.95
54.1833.44
93.6943.33
119.1553.24
63.11
72.84
82.35
92.31
102.31