Fe^(2+)/Na_2S_2O_8法去除水中四环素的实验研究  

Experimental Investigation on Degradation of Tetracycline by Fe^(2+)/Na_2S_2O_8 Method

作　　者：刘伟建 朱玲[1] 包思琪[1] 钟宇博 黄冬梅[1] LIU Wei-jian;ZHU Ling;BAO Si-qi;ZHONG Yu-bo;HUANG Dong-mei(College of Environment and Resources,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学环境与资源学院,长春130012

出　　处：《科学技术与工程》2018年第10期295-298,共4页Science Technology and Engineering

基　　金：吉林省省级经济结构战略调整专项计划(2015Y049)资助

摘　　要：研究了二价铁活化过硫酸钠法去除水中四环素(TC)的影响因素与机理,为四环素类废水的治理提供了新方法。研究结果表明,水中TC降解率随Na_2S_2O_8浓度的增大而增大;随TC浓度的增加而减小;随Fe^(2+)浓度升高,TC降解率先增大再减小,说明过高浓度的Fe^(2+)对反应产生抑制作用。在初始条件TC浓度为10μmol/L,Na_2S_2O_8浓度50μmol/L,Fe^(2+)浓度50μmol/L,pH为3.4时,TC降解率可以达到92%。利用分子探针法证明了体系中产生的自由基为SO_4^-·和·OH,其中SO_4^-·为主要作用自由基。The influence factors and mechanisms of tetracycline(TC)degradation were investigated in aqueous solution by Fe 2+activated persulfate and provided a new method for the treatment of tetracycline wastewater.The results showed that the removal efficiency of TC was significantly increased with the increasing of Na 2S 2O 8 dosage,but decreased with the increasing of the initial TC concentration.For the effect of Fe 2+,the degradation of TC increased at first and then decreased with the increasing of the concentration,which indicated that high concentration of Fe 2+inhibited the reaction.TC degradation rate reached 92%when the initial concentration of TC was 10μmol,the concentration of Na 2S 2O 8 was 50μmol,the concentration of Fe 2+was 50μmol and pH was 3.4.The molecular probe test showed that SO-4·and·OH were produced in the reaction and SO-4·had a more important effect than that of·OH.

关 键 词：四环素 过硫酸钠 二价铁 降解 

分 类 号：X523[环境科学与工程—环境工程]