超声波协同电化学氧化降解苯胺的研究

采用超声波协同电化学氧化法处理苯胺溶液，考察了超声时间、苯胺浓度、溶液pH、电解电压、电解质浓度等因素对苯胺降解率的影响。试验结果表明：在超声波与电化学联合作用下，苯胺降解率随降解时间的延长而提高，苯胺浓度无论是低还是高，声电联合作用完全去除苯胺只需30min左右，电化学单独作用完全去除苯胺约需要120min；苯胺初始浓度较低时，其降解率较高；随着pH的增大，苯胺降解率先降低后提高，pH为10左右苯胺降解率最高；电解质Na2SO4的浓度对苯胺降解率影响不大；电解电压在4～12V范围内，苯胺降解率随电压升高而提高，电压为16V时，其降解率下降。

Study on Treatment of Aniline Solution by Electrochemical Oxidation Process Combined with Ultrasound

Aniline solution was treated by electrochemical oxidation process combined with ultrasound.The effects of the factors such as irradiation time of ultrasound,aniline concentration,solution pH,electrolytic voltage and electrolyte concentration on degradation efficiency were examined.The results show that the removal rate of aniline increases with treatment time prolonging;aniline can be removed completely by the combined process in only about 30 min no matter high or low its concentration is,in 120 min by electrochemical oxidation process only;the removal rate of aniline is higher when its initial concentration is lower;the removal rate of aniline decreases first and then increases with solution pH increasing,it is the highest when solution pH is about 10;the removal rate of aniline is no significantly affected by the electrolyte Na_2SO_4;the removal rate of aniline increases with the augmentation of voltage in 4-12 V,and it decreases when the voltage reaches 16 V.