超声波降解水中苯酚的研究

Study on Degradation of Phenol by Ultrasound

分别研究了超声波、超声波/H2O2、超声波/Fenton试剂对苯酚降解率的影响。实验结果表明:对浓度为20 mg/L的苯酚水溶液超声波、超声波/H2O2、超声波/Fenton体系的降解率分别为10%、43%和58%。超声波可以提升H2O2和Fenton试剂的氧化效率。在超声功率为150 W、超声时间为60 min,溶液pH=3.0含有0.64%Fe2+,1.6%H2O2的条件下,其降解率可达60%。

Effects of ultrasound,ultrasound / H2O2,ultrasound / Fenton reagent on degradation rate of phenol were studied.The results show that the degradation rates of 20 mg/L phenol solution by ultrasound,ultrasound / H2O2 or ultrasound / Fenton reagent at pH=3.0 are 10%,43% and 58%,respectively.It＇s proved that the ultrasound can enhance oxidation efficiency of H2O2 or Fenton reagent,and the best degradation conditions are as follows：ultrasonic power 150 W,ultrasonic time 60 min,pH =3.0,Fe2＋ content 0.64% and H2O2 1.6%.Under above conditions,the degradation rate can reach 60%.