Chemical effect of swirling jet-induced cavitation: degradation of rhodamine B in aqueous solution.
The chemical effect of swirling jet-induced cavitation was investigated with the decomposing reaction of rhodamine B in aqueous solution. It was found that rhodamine B in aqueous solution can be degraded with swirling jet-induced cavitation and the degradation can be described by a pseudo-first-order kinetics. The effects of operating conditions such as pressure, temperature, initial concentration of rhodamine B, pH of water on the degradation rate of rhodamine B were discussed. It was found that the degradation rate of rhodamine B increased with increasing pressure and decreased with increasing initial concentration. It was also found that the degradation of rhodamine B was strongly dependent of temperature and pH of aqueous solution. The oxidation efficiency of swirling jet-induced cavitation for rhodamine B degradation was discussed and compared with ultrasonic cavitation. The result indicated that the swirling jet-induced cavitation is more energy efficient as compared to sonochemical cavitation.
Wang
Xikui
X
College of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China; College of Chemical Engineering, Shandong Institute of Light Industry, Jinan 250353, China. Electronic address: xk_wang@ujn.edu.cn.
Wang
Jingang
J
College of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China.
Guo
Peiquan
P
College of Mechanical Engineering, Jinan University, Jinan 250022, China.
Guo
Weilin
W
College of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China.
Li
Guoliang
G
College of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China.
D000465:Algorithms; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D016877:Oxidants / Q000737:chemistry; D010084:Oxidation-Reduction; D011312:Pressure; D012235:Rhodamines / Q000737:chemistry* / Q000528:radiation effects*; D012996:Solutions; D013696:Temperature; D014465:Ultrasonics; D014867:Water
D016877:Oxidants; D012235:Rhodamines; D012996:Solutions; D014867:Water; D006861:Hydrogen Peroxide; C029773:rhodamine B