摘要
为了探索硫酸根自由基氧化难降解有机物的效果与机理,采用超声波激活过硫酸盐产生硫酸根自由基降解水溶液中的四环素。考察了硫酸根自由基降解四环素的影响因素,并对激活与降解机理进行了分析。结果表明,最佳反应条件为:[TC]=0.1 mmol/L,[PS]=4 mmol/L,pH=7,T=25℃,US功率=500 W,最佳条件下的TC去除率可以达到82.8%,反应中形成的硫酸根自由基是四环素降解的主要原因。证明超声波能有效激活过硫酸盐降解四环素。
In order to explore the effect and mechanism of sulfate radical oxidation of refractory organics,ultrasonic wave was used to activate persulfate to generate sulfate radical to degrade tetracycline in aqueous solution.The factors influencing the degradation of tetracycline by sulfate radicals were investigated,and the activation and degradation mechanism were analyzed.The results show that the optimal reaction conditions are[TC]=0.1 mmol/L,[PS]=4 mmol/L,pH=7,T=25℃,US power=500 W,the TC removal rate under the optimal conditions can reach 82.8%,and the reaction the sulfate radical formed in tetracycline is the main reason for the degradation of tetracycline.It is proved that ultrasound can effectively activate persulfate to degrade tetracycline.
作者
张鑫
ZHANG Xin(College of Civil Engineering and Architecture,Liaoning University of Technology,Jinzhou 121001,China)
出处
《应用化工》
CAS
CSCD
北大核心
2023年第2期471-475,共5页
Applied Chemical Industry
基金
辽宁省教育厅项目资助(JZL202015406)。
