邓亚梅;王荣富;方国东;周东美;

• 1:安徽农业大学
• 2:南京土壤研究所中国科学院土壤环境与污染修复重点实验室

摘要(Abstract)：

发展了基于五氧化二钒(V_2O_5)和过氧化氢(H_2O_2)的新型类Fenton体系,探索了此体系产生羟基(·OH)的机制及降解邻苯二甲酸二乙酯(DEP)的效率;并考察了V_2O_5投加量、H_2O_2浓度,以及草酸对DEP降解的影响。结果表明,当V_2O_5投加量为0.1 g·L-1,H_2O_2浓度为2.0 mmol·L-1,反应24 h后,对DEP(25 mg·L-1)的降解率可达61.1%,增加或降低V_2O_5投加量和H_2O_2浓度均不利于DEP的降解。利用电子顺磁共振技术(Electron Paramagnetic Resonance,EPR)耦合5,5-二甲基-1-吡咯啉氮氧化物(DMPO)为捕获剂对反应体系中的主导自由基进行鉴定,发现·OH是体系降解DEP的主要活性物种,利用苯甲酸作为探针分子实现了·OH的间接定量,并初步推测了V_2O_5活化H_2O_2的过程。

关键词(KeyWords)： 五氧化二钒;过氧化氢;类Fenton;邻苯二甲酸二乙酯;降解机制

Abstract:

Keywords:

基金项目(Foundation): “十二五”国家科技支撑计划(2012BAD14B);; 江苏省自然科学基金(BK20141047);; 江苏省环保科技课题(2015011)

作者(Author): 邓亚梅;王荣富;方国东;周东美;

Email:

DOI:

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