| UV/H_2O_2、UV/O_3和O_3体系中自由基产生效率的比较研究 |
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| 引用本文： | 金晓玲,马力强,李彦博,徐武军,汪翠萍,王凯军.UV/H_2O_2、UV/O_3和O_3体系中自由基产生效率的比较研究[J].环境工程,2012(Z2):412-416. |
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| 作者姓名： | 金晓玲 马力强 李彦博 徐武军 汪翠萍 王凯军 |
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| 作者单位： | 中国矿业大学(北京)化学与环境工程学院;清华大学环境学院;北京科技大学土木与环境工程学院 |
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| 摘 要： | 以水杨酸(Salicylic Acid,SA)为模型探针分子,采用高效液相色谱法(HPLC)研究了UV/H2O2、UV/O3和O3等高级氧化工艺的羟基自由基(·OH)产生效率。实验结果表明,在SA初始浓度40mg/L,反应时间10min,氧化剂投加量2mmol/L的条件下,2,5-DHBA和2,3-DHBA为水杨酸与·OH反应的主要中间产物。三种高级氧化工艺中,UV/H2O2体系具有最高的羟基自由基(·OH)产生效率。
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| 关 键 词： | 水杨酸 羟基自由基 高级氧化 羟基化产物 |
A COMPARATIVE STUDY ON FREE RADICAL PRODUCTION EFFICIENCY OF UV/H2O2,UV/O3 AND O3 |
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| Jin Xiaoling,Ma Liqiang,Li Yanbo,Xu Wujun,Wang Cuiping,Wang Kaijun.A COMPARATIVE STUDY ON FREE RADICAL PRODUCTION EFFICIENCY OF UV/H2O2,UV/O3 AND O3[J].Environmental Engineering,2012(Z2):412-416. |
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| Authors: | Jin Xiaoling Ma Liqiang Li Yanbo Xu Wujun Wang Cuiping Wang Kaijun |
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| Institution: | 1.School of Chemical & Environment Engineering,China University of Mining & Technology, Beijing 100083,China;2.School of Ervironment,Tsinghua University,Beijing 100084,China; 3.Civil and Environmental Engineering Institute,University of Science & Technology Beijing,Beijing 100083,China) |
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| Abstract: | Salicylic acid(SA) was chosen as a model probe molecule to study the free radical production efficiency of different advanced oxidation processes,such as UV/H2O2,UV/O3 and O3.The concentration variation of SA and its hydroxylation products was monitored with high performance liquid chromatography(HPLC).The obtained results indicated that the main intermediate products of SA hydroxylation were 2,5-DHBA and 2,3-DHBA,with the initial concentration of SA 40mg/L,reaction time 10min,and oxidant dosage 2mM.Among the three kinds of advanced oxidation processes,the UV/H2O2 reaction system possessed of the highest free radical product efficiency. |
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| Keywords: | salicylic acid hydroxyl radical advanced oxidation hydroxylate |
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