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International Journal of Photoenergy
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International Journal of Photoenergy
/
2013
/
Article
/
Tab 3
/
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
(10
2
min
−1
) for operating parameter of pH and duration.
Effect of initial pH
Duration test
pH
k
Cycle
k
2
3.74
1
4.41
3
3.74
2
3.95
5
4.18
3
3.44
9
3.69
4
3.33
11
9.15
5
3.24
6
3.11
7
2.84
8
2.35
9
2.31
10
2.31