Evaluation of Sonocatalytic and Photocatalytic Processes Efficiency for Degradation of Humic Compounds Using Synthesized Transition-Metal-Doped ZnO Nanoparticles in Aqueous Solution

Figure 10

Effects of various operational parameters: (a) solution pH (contact time = 90 min, humic acid concentration = 30 mg/L, dosage = 2 g/l, dopant percentage 2%) under the presence of VL, (b) pollutant concentration (pH = 7, dopant percentage 2%, dosage = 2 g/l) under the presence of VL, (c) nanocatalyst dosage (contact time = 90 min, humic acid concentration = 20 mg/L, pH = 7, dopant percentage = 2%) under the presence of VL, and (d) contact time (humic acid concentration = 20 mg/L, pH = 7, dopant percentage 2%, dosage = 2 g/l) under the presence of VL on photocatalysis of humic acid using the Cu.ZnO PNs.

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(b)

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