基于纳米铁的类Fenton法降解水中的三氯生

发布时间：2017-12-28 20:37

本文关键词：基于纳米铁的类Fenton法降解水中的三氯生　出处：《科技导报》2016年22期 　论文类型：期刊论文

【摘要】：作为一种广泛存在的典型药品及个人护理品,三氯生(TCS)给生态环境和人体健康带来了潜在的威胁。以三氯生为目标污染物,采用实验室自行设计合成的零价纳米铁作为类Fenton试剂,研究了类Fenton法对三氯生的降解过程。单因素实验结果表明,三氯生的去除率随着纳米铁投加量和双氧水浓度的增加而增加;在溶液pH值为3时去除率最高;三氯生的初始浓度对去除率的影响不太明显。动力学分析表明三氯生的降解反应符合二级反应。在相同实验条件下,类Fenton试剂对三氯生的去除率明显优于传统Fenton试剂和单独投加纳米铁的体系。
[Abstract]:As a wide range of typical drugs and personal care products, three chloro raw (TCS) poses a potential threat to the ecological environment and human health. Taking three chlorosin as the target pollutant, we studied the degradation process of three chlorosin by Fenton like method using the zero valent iron nanoparticles designed by our laboratory as Fenton like reagents. The single factor experiment results showed that the removal rate of three chlorosin increased with the increase of nano iron dosage and hydrogen peroxide concentration. When the solution pH value was 3, the removal rate was the highest; the initial concentration of three chlorosin had little influence on the removal rate. The kinetic analysis showed that the degradation reaction of three chloro was in accordance with the two stage reaction. Under the same experimental conditions, the removal rate of Fenton - like reagent for three chlorosine was obviously better than that of the traditional Fenton reagent and the system of adding nanoscale iron alone.
【作者单位】：中国人民大学环境学院;
【基金】：国家自然科学基金项目(51108454) 中央高校基本科研业务费专项(14XNLQ02)
【分类号】：X52
【正文快照】： 近年来,药品及个人护理品(pharmaceutical and personalcare products,PPCPs)作为一类新兴污染物日益受到人们的关注。作为一种广谱抗菌剂,三氯生(2,4,4′-三氯-2′-羟基二苯醚,triclosan,TCS)广泛添加在各种个人护理品(如洗发水、肥皂、牙膏等)和日用品(鞋类、塑料服装等)中,

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