Fe^(2+)/过硫酸钠体系降解盐酸四环素的研究  

Study on degradation of tetracycline hydrochloride by Fe^(2+)/sodium persulfate system

作　　者：张良波[1] 许春红[1] 祝慧娜[1] 李莹[1] 张宝忠[1] 

机构地区：[1]河南工业大学化学化工与环境学院,河南郑州450001

出　　处：《环境污染与防治》2017年第7期776-779,783,共5页Environmental Pollution & Control

基　　金：河南省科技攻关项目(No.172102210031);河南工业大学高层次人才基金资助项目(No.2012BS057);河南工业大学科技创新人才培育计划项目(No.2014CXRC05);河南省高等学校重点科研项目(No.16B610004)

摘　　要：采用Fe^(2+)/过硫酸钠体系降解水溶液中的盐酸四环素,探讨了盐酸四环素初始浓度、Fe^(2+)浓度、过硫酸钠浓度、温度、pH等因素对降解效果的影响。单因素实验结果表明,盐酸四环素去除率随着盐酸四环素的初始浓度、过硫酸钠浓度、温度的增大而增大;随着Fe^(2+)浓度的增加,盐酸四环素去除率先增大后减小;酸性条件有利于Fe^(2+)/过硫酸钠体系对盐酸四环素的降解。当盐酸四环素初始质量浓度为50mg/L、Fe^(2+)摩尔浓度为0.10mmol/L、过硫酸钠摩尔浓度为2.0mmol/L、反应温度为30℃、pH=3.0时,反应90min后盐酸四环素去除率可达87.6%。Fe^(2+)/过硫酸钠体系对盐酸四环素的降解用一级反应动力学方程进行拟合,得到该反应体系下盐酸四环素降解的活化能为5.173kJ/mol。The degradation of tetracycline hydrochloride by Fe^2＋/sodium persulfate system was studied in this paper.The influence of tetracycline hydrochloride initial concentration,Fe^2＋concentration and sodium persulfate concentration,reaction temperature and pH on tetracycline hydrochloride degradation efficiency was investigated.The results showed that the degradation efficiency of tetracycline hydrochloride increased with the increasing of the initial concentration of tetracycline hydrochloride,the concentration of sodium persulfate and the reaction temperature.The degradation efficiency of tetracycline hydrochloride increased first and then decreased with the increasing of the Fe^2＋concentration.Acidic condition was favorable for the degradation of tetracycline hydrochloride by Fe^2＋/sodium persulfate system.The degradation efficiency of tetracycline hydrochloride could reach 87.6% under the condition of the initial mass concentration of tetracycline hydrochloride 50mg/L,the molar concentration of Fe^2＋0.10mmol/L,the molar concentration of sodium persulfate 2.0mmol/L,the reaction temperature 30 ℃,the pH 3.0and the reaction time90 min.The degradation of tetracycline hydrochloride by Fe^2＋/sodium persulfate system followed the first order reaction kinetic equation.The activation energy of tetracycline hydrochloride degradation was 5.173kJ/mol in this reaction system.

关 键 词：高级氧化技术 FE^2+ 硫酸根自由基 盐酸四环素 

分 类 号：X703[环境科学与工程—环境工程]