超声强化硫酸亚铁活化过碳酸钠降解甲硝唑

Degradation of Metronidazole by Ultrasound-Assisted Sodium Percarbonate Activated by Ferrous Sulfate

采用超声波辅助硫酸亚铁活化过碳酸钠体系降解水中的甲硝唑。用单因素实验来考察硫酸亚铁投加量、过碳酸钠投加量、超声时间、超声功率和pH等条件对甲硝唑降解的影响。确定甲硝唑最佳降解条件:硫酸亚铁为1 g/L,过碳酸钠为0.5 g/L,超声时间为7 min,超声功率为140 w,pH为5。甲硝唑降解率达90.2%。该方法简便、快速、准确,为应用于含有甲硝唑的废水降解提供有效的理论科学依据。

The performance of metronidazole degradation by ultrasound-assisted using sodium percarbonate activated by ferrous sulfate was investigated. Single factor experiment was used to investigate the effects of ferrous sulfate dosage, sodium percarbonate dosage, ultrasonic time, ultrasonic power and pH on metronidazole degradation was optimized. The optimum degradation conditions of metronidazole are follows: ferrous sulfate is 1 g/L, sodium percarbonate is 0.5 g /L, ultrasonic time is 7 min, ultrasonic power is 140 w, pH is 5, and the degradation rate of metronidazole was 90.2%. This method is simple, rapid and accurate, and provides effective theoretical and scientific basis for the degradation of waste water containing metronidazole.