超声强化海绵铁催化过硫酸钾降解氯霉素研究

Experimental Study on Chloramphenicol Degradation in Ultrasonic Enhanced Sponge Iron/Potassium Persulfate System

摘要: 研究超声强化对海绵铁催化过硫酸钾降解氯霉素的效果，考察过硫酸钾和海绵铁添加量，氯霉素初始pH，超声功率，超声时间等因素的影响。用单因素实验对样品前处理条件进行优化，确定最佳样品前处理条件。氯霉素的初始浓度为0.1 g/L时，超声功率200 W，初始pH = 3.0 ± 0.1，过硫酸钾和海绵铁添加量分别为6.0 g/L和8.0 g/L，超声时间20 min，氯霉素的降解效果达到最佳89.70%。超声强化海绵铁催化过硫酸钾降解体系可以有效地去除水中的氯霉素，且去除率比较高。

Abstract: The degradation of Chloramphenicol (CPA) in the ultrasound/sponge iron/potassium persulfate (US/SI/PS) system was studied. The influencing factors such as adding amount of potassium persulfate and sponge iron, sulfadiazine initial pH value and ultrasonic time were investigated. Single factor experiment was used to optimize the sample pretreatment conditions, and the best sample pretreatment conditions were determined. When the initial concentration of chloramphenicol was 0.1 g/L, the ultrasonic power was 200 W, the initial pH was 3.0 ± 0.1, the addition of potassium persulfate and iron sponge was 6.0 g/L and 8.0 g/L, respectively, and the ultrasonic time was 20 min. The degradation effect of chloramphenicol reached the best 89.70%. Ultrasound-enhanced sponge iron-catalyzed potassium persulfate degradation system can effectively remove chloramphenicol from water, and the removal rate is relatively high.