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刘华英, 韩骐骏, 房岐, 柴小龙, 田森林, 李英杰. 光助-过碳酸钠体系降解2-羟基-4-甲氧基二苯甲酮[J]. 环境化学, 2020, (3): 636-642. doi: 10.7524/j.issn.0254-6108.2019081402
引用本文: 刘华英, 韩骐骏, 房岐, 柴小龙, 田森林, 李英杰. 光助-过碳酸钠体系降解2-羟基-4-甲氧基二苯甲酮[J]. 环境化学, 2020, (3): 636-642. doi: 10.7524/j.issn.0254-6108.2019081402
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LIU Huaying, HAN Qijun, FANG Qi, CHAI Xiaolong, TIAN Senlin, LI Yingjie. Photo-assisted degradation of benzophenone-3 by sodium percarbonate system[J]. Environmental Chemistry, 2020, (3): 636-642. doi: 10.7524/j.issn.0254-6108.2019081402
Citation: LIU Huaying, HAN Qijun, FANG Qi, CHAI Xiaolong, TIAN Senlin, LI Yingjie. Photo-assisted degradation of benzophenone-3 by sodium percarbonate system[J]. Environmental Chemistry, 2020, (3): 636-642. doi: 10.7524/j.issn.0254-6108.2019081402
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光助-过碳酸钠体系降解2-羟基-4-甲氧基二苯甲酮

  • 昆明理工大学环境科学与工程学院, 昆明, 650500

    • 通讯作者: 李英杰, E-mail: yjli@kmust.edu.cn
  • 基金项目:

    国家自然科学基金（21707058）和云南省优秀青年基金（2019FI004）资助.

Photo-assisted degradation of benzophenone-3 by sodium percarbonate system

  • Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China

    • Corresponding author: LI Yingjie, yjli@kmust.edu.cn
  • Fund Project: Supported by the National Natural Science Foundation of China (21707058) and Natural Science Foundation for Excellent Young Scholars of Yunnan Province (2019FI004).

  • 摘要: 有机防晒剂在废水、海水和地表水中经常检出，亟需发展新型高效的去除技术.本研究构建了以过碳酸钠（SPC）代替H2O2的光助均相氧化体系，并选取水体中广泛检出的2-羟基-4-甲氧基二苯甲酮（BP-3）为模型化合物，研究了该体系中的降解动力学和常见溶解性组分的影响.结果表明，相对于单独SPC、单独UV体系，BP-3在SPC+UV体系中呈现更好的降解效率.自由基淬灭和电子自旋共振实验证实·OH是SPC+UV体系中降解BP-3的最主要活性物种.水中常见溶解性组分DOM和Br-可淬灭体系中的·OH进而对BP-3的降解表现为抑制效应；而Cl-在低浓度下促进BP-3降解，高浓度则抑制其降解，这和BP-3与Cl·、Cl2·-的反应活性差异相关.
    Abstract: Organic sunscreen agents were frequently detected in wastewater, seawater, and surface water, which urgently needs to develop a novel and efficient treatment technology for these pollutants in water. In this study, Fenton-like system based on sodium percarbonate (SPC), instead of H2O2, was constructed, and benzophenone-3(BP-3) was selected as a model compound due to its wide detection in water. The degradation kinetics and the effect of main water constituents in this oxidation system were investigated. The results showed that SPC+UV system had better degradation efficiency for BP-3 relative to individual SPC and UV systems. Radical scavenging and electron spin resonance experiments demonstrated that·OH was largely responsible for the degradation of BP-3 in the SPC+UV system. DOM and Br- quenched·OH, which led to the inhibitive effect on the degradation of BP-3. Cl- could promote BP-3 degradation in a relatively low concentrations, and inhibit BP-3 degradation in a relatively high Cl-, which might be relevant to the different reactivity of BP-3 with Cl·and Cl2·-.
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  • 收稿日期:  2019-08-14

光助-过碳酸钠体系降解2-羟基-4-甲氧基二苯甲酮

    通讯作者: 李英杰, E-mail: yjli@kmust.edu.cn
  • 昆明理工大学环境科学与工程学院, 昆明, 650500
  • 收稿日期:  2019-08-14
基金项目:

国家自然科学基金（21707058）和云南省优秀青年基金（2019FI004）资助.

摘要: 有机防晒剂在废水、海水和地表水中经常检出，亟需发展新型高效的去除技术.本研究构建了以过碳酸钠（SPC）代替H2O2的光助均相氧化体系，并选取水体中广泛检出的2-羟基-4-甲氧基二苯甲酮（BP-3）为模型化合物，研究了该体系中的降解动力学和常见溶解性组分的影响.结果表明，相对于单独SPC、单独UV体系，BP-3在SPC+UV体系中呈现更好的降解效率.自由基淬灭和电子自旋共振实验证实·OH是SPC+UV体系中降解BP-3的最主要活性物种.水中常见溶解性组分DOM和Br-可淬灭体系中的·OH进而对BP-3的降解表现为抑制效应；而Cl-在低浓度下促进BP-3降解，高浓度则抑制其降解，这和BP-3与Cl·、Cl2·-的反应活性差异相关.

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