Effect of various sono-oxidation parameters on the removal of aqueous 2,4-dinitrophenol.
The influences of ultrasonic output intensity, solution pH, H2O2 concentration and the addition of Fenton reagent on the degradation of 2,4-dinitrophenol (DNP) under ultrasonic irradiation were investigated. It was observed that the degradation of DNP fitted pseudo-first-order dynamics under our experimental conditions. Increasing the ultrasonic output intensity increased the degradation efficiency of DNP and low pH favored the ultrasonic degradation of DNP. The addition of H2O2 enhanced the ultrasonic degradation efficiency of DNP. The further addition of Cu2+, however, hindered the degradation of DNP. In contrast, sono-oxidation treatment in combination with FeSO4/H2O2 showed a synergistic effect for DNP degradation.
Guo
Zhaobing
Z
State Key Laboratory of Pollution Control and Resource Reuse, Environmental School, Nanjing University, Nanjing 210093, PR China.
Zheng
Zheng
Z
Zheng
Shourong
S
Hu
Wenyong
W
Feng
Ruo
R
D019297:2,4-Dinitrophenol / Q000737:chemistry* / Q000528:radiation effects; D003300:Copper / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007501:Iron / Q000737:chemistry; D010084:Oxidation-Reduction; D014465:Ultrasonics; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007202:Indicators and Reagents; D014874:Water Pollutants, Chemical; D003300:Copper; D006861:Hydrogen Peroxide; D007501:Iron; D019297:2,4-Dinitrophenol