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Fenton法降解邻苯二甲酸二乙酯的动力学特征及其影响因素研究

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章琴琴, 丁世敏, 封享华, 余友清, 王捷, 陈凤贵, 黄海燕. Fenton法降解邻苯二甲酸二乙酯的动力学特征及其影响因素研究[J]. 环境化学, 2020, (11): 3009-3016. doi: 10.7524/j.issn.0254-6108.2019082201
引用本文: 章琴琴, 丁世敏, 封享华, 余友清, 王捷, 陈凤贵, 黄海燕. Fenton法降解邻苯二甲酸二乙酯的动力学特征及其影响因素研究[J]. 环境化学, 2020, (11): 3009-3016. doi: 10.7524/j.issn.0254-6108.2019082201
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ZHANG Qinqin, DING Shimin, FENG Xianghua, YU Youqing, WANG Jie, CHEN Fenggui, HUANG Haiyan. Study on the degradation kinetic characteristics and influencing factors of diethyl phthalate by Fenton treatment[J]. Environmental Chemistry, 2020, (11): 3009-3016. doi: 10.7524/j.issn.0254-6108.2019082201
Citation: ZHANG Qinqin, DING Shimin, FENG Xianghua, YU Youqing, WANG Jie, CHEN Fenggui, HUANG Haiyan. Study on the degradation kinetic characteristics and influencing factors of diethyl phthalate by Fenton treatment[J]. Environmental Chemistry, 2020, (11): 3009-3016. doi: 10.7524/j.issn.0254-6108.2019082201
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Fenton法降解邻苯二甲酸二乙酯的动力学特征及其影响因素研究

  • 长江师范学院绿色智慧环境学院, 重庆, 408100

    • 通讯作者: 章琴琴, E-mail: zhangqinqin@yznu.edu.cn ; 
  • 基金项目:

    重庆市自然科学基金（cstc2019jcyj-msxmX0672），重庆市教委科学技术研究项目（KJ1712311，KJ1601209），国家留学基金委（201808505139），重庆市涪陵区科技计划项目（FLKJ2018BBB3020）和长江师范学院科研项目资助.

Study on the degradation kinetic characteristics and influencing factors of diethyl phthalate by Fenton treatment

  • Green Intelligent Environmental School, Yangtze Normal University, Chongqing, 408100, China

    • Corresponding author: ZHANG Qinqin, zhangqinqin@yznu.edu.cn ; 
  • Fund Project: Supported by the Natural Science Foundation of Chongqing (cstc2019jcyj-msxmX0672), the Science and Technology Research Program of Chongqing Municipal Education Commission (KJ1712311, KJ1601209), the National Scholarship Council (201808505139),the Science and Technology Project of Fuling District, Chongqing (FLKJ2018BBB3020) and the Research Project of Yangtze Normal University.

  • 摘要: 邻苯二甲酸二乙酯（diethyl phthalate，DEP）作为典型增塑剂，使用量巨大.DEP是一种环境激素，在环境中广泛检出，会影响生物体的生殖功能.本文研究了Fenton法降解环境浓度水平的典型增塑剂的动力学特征及其影响因素，研究表明，H2O2浓度、Fe2+浓度、pH值及DEP的初始浓度都会对DEP的动力学和降解特征产生不同程度的影响.在pH 3.0，DEP为50 μmol·L-1，亚铁浓度为100 μmol·L-1，过氧化氢浓度为500 μmol·L-1时，反应30 min后，DEP去除率为71%.增加Fe2+与H2O2浓度有利于DEP的去除；水中常见物质Cl-、NO3-、HCO3-与HA共存时，DEP的去除效率受到抑制；反应前9 min，一阶反应速率常数k1值与体系中DEP的初始浓度之间呈负线性相关关系.相对于一阶和二阶动力学，BMG动力学模型是描述Fenton法对低浓度DEP去除过程的最佳模型.DEP浓度、pH、[H2O2]/[Fe2+]摩尔比值与BMG模型中的1/m和1/b存在良好的相关关系（R2>0.9）.
    Abstract: As a typical plasticizer, diethyl phthalate (DEP) is used in a huge amount. DEP is an environmental hormone widely detected in the environment and affects the reproductive function of organisms. Fenton is a commonly used advanced oxidation technology for the removal of refractory organics. In this paper, the kinetic characteristics and influencing factors of typical plasticizer degradation in environmental concentration level by Fenton method were studied. The results showed that concentration of H2O2, concentration of Fe2+, pH value and initial concentration of DEP had different effects on the dynamics and degradation characteristics of DEP. When the pH was 3.0, the concentration of DEP was 50 μmol·L-1, the concentration of Fe2+ was 100 μmol·L-1, and concentration of H2O2 was 500 μmol·L-1, the removal efficiency of DEP reached 71% after 30 min. Increasing the concentrations of Fe2+ and H2O2 was beneficial to improve the removal efficiencies of DEP. When the common substances in water coexisted, such as Cl-, NO3-, HCO3- and HA, the removal efficiencies of DEP were inhibited; There was a negative linear correlation between the first-order reaction rate constant k1 value and the initial concentrations of DEP at the first 9 min. Compared to first-order and second-order kinetics, the BMG kinetic model was the best model to describe the removal of low-concentration DEP by Fenton method.
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  • 收稿日期:  2019-08-22

Fenton法降解邻苯二甲酸二乙酯的动力学特征及其影响因素研究

    通讯作者: 章琴琴, E-mail: zhangqinqin@yznu.edu.cn ; 
  • 长江师范学院绿色智慧环境学院, 重庆, 408100
  • 收稿日期:  2019-08-22
基金项目:

重庆市自然科学基金（cstc2019jcyj-msxmX0672），重庆市教委科学技术研究项目（KJ1712311，KJ1601209），国家留学基金委（201808505139），重庆市涪陵区科技计划项目（FLKJ2018BBB3020）和长江师范学院科研项目资助.

摘要: 邻苯二甲酸二乙酯（diethyl phthalate，DEP）作为典型增塑剂，使用量巨大.DEP是一种环境激素，在环境中广泛检出，会影响生物体的生殖功能.本文研究了Fenton法降解环境浓度水平的典型增塑剂的动力学特征及其影响因素，研究表明，H2O2浓度、Fe2+浓度、pH值及DEP的初始浓度都会对DEP的动力学和降解特征产生不同程度的影响.在pH 3.0，DEP为50 μmol·L-1，亚铁浓度为100 μmol·L-1，过氧化氢浓度为500 μmol·L-1时，反应30 min后，DEP去除率为71%.增加Fe2+与H2O2浓度有利于DEP的去除；水中常见物质Cl-、NO3-、HCO3-与HA共存时，DEP的去除效率受到抑制；反应前9 min，一阶反应速率常数k1值与体系中DEP的初始浓度之间呈负线性相关关系.相对于一阶和二阶动力学，BMG动力学模型是描述Fenton法对低浓度DEP去除过程的最佳模型.DEP浓度、pH、[H2O2]/[Fe2+]摩尔比值与BMG模型中的1/m和1/b存在良好的相关关系（R2>0.9）.

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