Removal of oxytetracycline in aqueous solution using sonoelectro-activated persulfate process

• 作 者: Junfeng Wu Pengchao Xie Xiuqing Lu Han Xu Guangrui He Qianfeng Li Zongping Wang Songlin Wang
• 机 构: SchoolofEnvironmentalScienceandEngineering,HuazhongUniversityofScienceandTechnology,1037LuoyuRoad,Wu
• 出 处: 武汉大学 第十届湖北省给水排水工程与环境工程研究生学术论坛
• 发表日期: 2016年12期
• 关键词: Oxytetracycline Persulfate sonoelectro-activated Sulfate radical Byproducts

　　In this study,removal of oxytetracycline(OTC)from aqueous solution using sonoelectro-activated persulfate(PS)process was comprehensively evaluated along with investigating the kinetics and proposing a possible degradation pathway.A significant synergistic effect of ultrasound and electrolysis was found in the degradation of OTC by using sonoelectro-activated persulfate process.Experiments under different operating conditions were conducted,showing that removal efficiency increased with increasing PS:OTC ratio,rising reaction temperature and lower pH.Both hydroxyl and sulfate radical were involved in the system and contributed to the oxidation of OTC suggesting the pseudo-first-order kinetics in such a process.Based on the fourteen byproducts detected during the oxidation process,degradation pathways including hydroxylation,decarbonylation,dehydration and demethylation were speculated.