相向双频超声降解罗丹明B(RhB)的实验研究  

The Research of Degradation of RhB with Dual-frequency Ultrasound

作　　者：马艳[1] 申学鹏[2] 张宁宁[3] 

机构地区：[1]宁夏师范学院物理与信息技术学院,固原756000 [2]宁夏师范学院院长办公室,固原756000 [3]渭南师范学院物理与电子工程系,渭南710062

出　　处：《宁夏师范学院学报》2012年第6期40-43,共4页Journal of Ningxia Normal University

摘　　要：使用了20 kHz和25 kHz的相向双频超声波降解装置,利用染色法研究了不同频率及功率下超声的空化效应;并将双频超声应用于罗丹明B(RhB)的降解研究,实验结果表明:双频超声(20 kHz+25 kHz)的空化效应大于单频超声(频率分别为20 kHz和25 kHz);在温度20±0.5℃、相向双频超声组合(20 kHz,30 W+25 kHz,20 W)方式在同等能耗下对于RhB的降解效果最好,降解率达到10.81%,明显高于同样条件下单频超声和其它功率组合下的双频超声.The degradation of the ultrasound under the different frequency and power was studied by using 20 khz and 25 khz of ultrasonic frequency,and the degradation the RhB was investigated with the application of dual-frequency of ultrasound.The experiment result shows that under the same ultrasound power input,the iodine content and the cavitation yield in dual-frequency ultrasound（20 kHz＋15 kHz） were more than those in the 20 kHz ultrasound or 25 kHz ultrasound condition.The parameters were： temperature at 20±0.5 ℃,and under the dual-frequency ultrasound（20 kHz,30 W＋25 kHz,20 W）,the degradation was the best at the same condition.

关 键 词：相向双频超声 降解 RHB 声场 

分 类 号：O426.9[理学—声学]