超声波降解苯胺溶液的实验研究

Experimental study on degradation of aniline solution by ultrasonic-wave

以苯胺溶液为研究对象 ,考察了超声时间、苯胺溶液浓度、pH值、氧化剂H2 O2 的浓度等因素对其超声降解率的影响 .实验结果表明 :超声时间越长 ,苯胺降解率越大 ;苯胺初始浓度与其降解率基本成线性关系 ;随着pH值的增大 ,降解率先增大后减少 ,在pH =7 3附近降解率最高 ;对于 32 2 3mg L的苯胺溶液 ,H2 O2 的浓度由 0增加到 1 6mg mL ,降解率从 6 0 2 %增加到 93% ,再增大H2 O2 的浓度 。

The effects of ultrasonic irradiation time, concentration of aniline solution, pH and condntration of addtive H 2O 2 on the degradation efficiency of aniline were studied. The results showed that the longer sonication time was relatied, the greater degradation efficiency was gained; the degradation efficiency of aniline solution increased with the increasing of the original solution concentration linearly; the degradation of aniline increased at first, then decreased with the increasing of pH ; the degradation of aniline reached to the highest at pH=7 3; when the concentration of H 2O 2 increased from 0 to 1 60?mg/mL, the degradation efficiency of aniline solution (the initial concentration is 32 23?mg/L) increased from 6 02% to 93%, then kept constant even the concentration of H 2O 2 increased continually.