Nano-sized metal oxides and their concentrations
Sonodegradation removals (%)
COD
dis
Phenol
TAAs
Color
Control without nano-sized metal oxides
61
61
66
50
TiO
2
= 2 mg/L
92
90
86
85
TiO
2
= 4 mg/L
97
97
88
94
TiO
2
= 8 mg/L
90
94
83
90
NiO = 4 mg/L
66
84
84
83
NiO = 7 mg/L
89
91
88
88
NiO = 10 mg/L
85
88
85
90
ZnO = 1 mg/L
64
86
74
80
ZnO = 3 mg/L
72
90
89
88
ZnO = 5 mg/L
92
93
90
93
Table 5:
Effects of some nano-sized metal oxides on the removal of COD
dis
, total phenol, TAAs and color at 25°C, after 150 min ultrasound time, at a frequency of 35 kHz, at a power of 640 W and at pH=5.4 (n=3, mean values).