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光电Fenton耦合转盘技术处理四环素废水

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张岩, 高明明, 王新华, 王曙光, 刘瑞婷. 光电Fenton耦合转盘技术处理四环素废水[J]. 环境化学, 2016, 35(5): 893-900. doi: 10.7524/j.issn.0254-6108.2016.05.2015120106
引用本文: 张岩, 高明明, 王新华, 王曙光, 刘瑞婷. 光电Fenton耦合转盘技术处理四环素废水[J]. 环境化学, 2016, 35(5): 893-900. doi: 10.7524/j.issn.0254-6108.2016.05.2015120106
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ZHANG Yan, GAO Mingming, WANG Xinhua, WANG Shuguang, LIU Ruiting. Photo-electro-Fenton degradation of tetracycline based on rotating disk electrode[J]. Environmental Chemistry, 2016, 35(5): 893-900. doi: 10.7524/j.issn.0254-6108.2016.05.2015120106
Citation: ZHANG Yan, GAO Mingming, WANG Xinhua, WANG Shuguang, LIU Ruiting. Photo-electro-Fenton degradation of tetracycline based on rotating disk electrode[J]. Environmental Chemistry, 2016, 35(5): 893-900. doi: 10.7524/j.issn.0254-6108.2016.05.2015120106
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光电Fenton耦合转盘技术处理四环素废水

  • 1.

    山东大学环境科学与工程学院, 济南, 250100

  • 基金项目:

    国家自然科学基金(21007033)资助.

Photo-electro-Fenton degradation of tetracycline based on rotating disk electrode

  • 1.

    School of environmental science and engineering, Shandong University, Jinan, 250100, China

  • Fund Project: Supported by the National Natural Science Foundation of China(21007033).

  • 摘要: 本实验中,我们开发了一种耦合紫外光催化和转盘技术的电Fenton反应器用于降解含有四环素的有机废水.在该反应器中,O2首先在旋转的石墨阴极表面发生还原反应生成H2O2,随后H2O2被催化分解成活性自由基来降解矿化有机物.实验中了考察了pH,阴极电压,转速等实验条件对系统生成H2O2能力的影响.结果表明,在pH=3,阴极电压-0.8 V vs. SCE,转速为400 r·min-1条件下,经过75 min反应H2O2的积累浓度有最大值(51.5 mg·L-1).实验证明该系统对四环素有较好的降解和矿化效果.以1.0 mmol·L-1的Fe2+作为催化剂,紫外/电Fenton耦合转盘系统可以在45 min内将初始浓度50 mg·L-1四环素降解94.2%且90 min时TOC的去除率为68.2%.紫外/电Fenton处理效果明显优于电Fenton系统.进一步实验分析发现,紫外线的引入可以通过两种途径来提升电Fenton的处理效果.一方面紫外光可以促进Fe3+还原成Fe2+,加速体系铁离子循环,从而提升电Fenton的处理效果;另一方面还可以通过直接激发H2O2分解成活性自由基加速降解四环素.
    Abstract: In this study, an electro-Fenton reactor coupling ultraviolet light and rotating disk technology was designed for the degradation of wastewater containing tetracycline. In this reactor, H2O2 was generated in situ from the reduction reaction of O2 in the rotating graphite cathode, and then the H2O2 is decomposed into active free radicals to degradation of recalcitrant organic pollutants. The effects of pH, voltage, and rotating speed on hydrogen peroxide generation were investigated, and the maximum concentration of H2O2 reached 51.5 mg·L-1 within 75 min at pH 3, rotation speed of 400 r·min-1 and a potential of-0.8 V vs. SCE. The photo-electro-Fenton system showed excellent ability for degrading organic pollutants compared to the electro-Fenton system. Experimental results showed that 94.2% of tetracycline (50 mg·L-1) was degraded in the photo-electro-Fenton system within 45 min and the TOC removal efficiency is 68.2% in 90 min. Further experiments indicated that the ferric ions are photo-converted to ferrous ions, increasing the hydroxyl radical generation rate. In addition, the direct excitation of hydrogen peroxide into the hydroxyl radical by UV contributed to the removal of tetracycline.
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  • [1] YAHIAOUI I, AISSANI-BENISSAD F, FOURCADE F, et al. Removal of tetracycline hydrochloride from water based on direct anodic oxidation (Pb/PbO2 electrode) coupled to activated sludge culture[J]. Chemical Engineering Journal, 2013,221: 418-425.
    [2] ZHOU M, YU Q, LI. L, et al. Electro-Fenton method for the removal of methyl red in an efficient electrochemical system[J]. Separation and Purification Technology, 2007, 57: 380-387.
    [3] SIRÉS I, OTURAN N, OTURAN M A, et al. Electro-Fenton degradation of antimicrobials triclosan and triclocarban[J]. Electrochimica Acta, 2007, 52(17): 5493-5503.
    [4] PETRUCCI E, MONTANARO D, LE DONNE S. Effect of carbon material on the performance of a gas diffusion electrode in electro-Fenton process[J]. Journal of Environmental Management, 2009, 19: 299-305.
    [5] GUPTA G, LAU C, RAJENDRAN V, et al. Direct electron transfer catalyzed by bilirubin oxidase for air breathing gas-diffusion electrodes[J]. Electrochemistry Communications, 2011, 13(3): 247-249.
    [6] XU Y, HE Y, JIA J,et al. Cu-TiO2/Ti dual rotating disk photocatalytic (PC) reactor: Dual electrode degradation facilitated by spontaneous electron transfer[J]. Environmental Science & Technology, 2009, 43(16): 6289-6294.
    [7] YU F K, ZHOU M H, ZHOU L, et al. A novel electro-Fenton process with H2O2 generation in a rotating disk reactor for organic pollutant degradation[J]. Environmental Science & Technology Letters, 2014, 1(7): 320-324.
    [8] 李英柳,邬红娟,李爱莲.转盘式反应器光催化氧化含酚废水的试验研究[J]. 工业水处理, 2006,26(10): 33-35.

    LI Y L, WU H J, LI A L, Experimental study on photocatalytic oxidation of phenol by turnplate reactor[J]. Industrial water treatment, 2006,26(10): 33-35(in Chinese).

    [9] RUALES-LONFAT C, BARONA J.F, SIENKIEWICZ A, et al. Iron oxides semiconductors are efficients for solar water disinfection: A comparison with photo-Fenton processes at neutral pH[J]. Applied Catalysis B: Environmental, 2005, 165: 497-508.
    [10] SOARES P.A, BATALHA M, SOUZA S.M, et al. Enhancement of a solar photo-Fenton reaction with ferric-organic ligands for the treatment of acrylic-textile dyeing wastewater[J].Journal of Environmental Management, 2015, 152: 120-131.
    [11] MOREIRA F C, BOAVENTURA R A R, BRILLAS E, et al. Degradation of trimethoprim antibiotic by UVA photoelectro-Fenton process mediated by Fe(Ⅲ)-carboxylate complexes[J]. Applied Catalysis B: Environmental, 2015, 162: 34-44.
    [12] SELLERS R M. Spectrophotometric determination of hydrogen peroxide using potassium titanium (Ⅳ) oxalate[J]. Analyst, 1980, 180(1255): 950-954.
    [13] CHU Y Y, QIAN Y, WANG W J, et al. A dual-cathode electro-Fenton oxidation coupled with anodic oxidation system used for 4-nitrophenol degradation[J]. Journal of Hazardous Materials, 2012, 199-200: 179-185.
    [14] QIANG Z, CHANG J H, HUANG C P. Electrochemical generation of hydrogen peroxide from dissolved oxygen in acidic solutions[J]. Water Research, 2002, 36: 85-94.
    [15] LOAIZA-AMBULUDI S, PANIZZA M, OTURAN N, et al. Electro-Fenton degradation of anti-inflammatory drug ibuprofen in hydroorganic medium[J]. Journal of Electroanalytical Chemistry, 2013, 702: 31-36.
    [16] MOREIRA F C, GARCIA-SEGURA S, BOAVENTURA R A R, et al. Degradation of the antibiotic trimethoprim by electrochemical advanced oxidation processes using a carbon-PTFE air-diffusion cathode and a boron-doped diamond or platinum anode[J]. Applied Catalysis B: Environmental, 2014, 160-161: 492-505.
    [17] GARCIA-SEGURA S, SALAZAR R, BRILLAS E. Mineralization of phthalic acid by solar photoelectro-Fenton with a stirred boron-doped diamond/air-diffusion tank reactor: Influence of Fe3+ and Cu2+ catalysts and identification of oxidation products[J]. Electrochimica Acta, 2013, 113: 609-619.
    [18] 冯杜,郭迎庆,李华杰,等. UV-H2O2降解羟苯甲酮反应动力学及影响因素[J].环境科学, 2015, 36: 2129-2136. FENG D, GUO Y Q, LI Y H, et al. Degradation of Organic Sunscreens 2

    -hydroxy-4-methoxybenzophenone by UV/H2O2 Process:Kinetics and Factors[J]. Environmental Science, 2015, 36: 2129-2136(in Chinese).

    [19] CAI C, ZHANG H, ZHONG X, et al. Electrochemical enhanced heterogeneous activation of peroxydisulfate by Fe-Co/SBA-15 catalyst for the degradation of OrangeⅡin water[J]. Water Research, 2014, 66: 473-485.
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  • 收稿日期:  2015-12-01
  • 刊出日期:  2016-05-15

光电Fenton耦合转盘技术处理四环素废水

  • 1. 山东大学环境科学与工程学院, 济南, 250100
  • 收稿日期:  2015-12-01
基金项目:

国家自然科学基金(21007033)资助.

摘要: 本实验中,我们开发了一种耦合紫外光催化和转盘技术的电Fenton反应器用于降解含有四环素的有机废水.在该反应器中,O2首先在旋转的石墨阴极表面发生还原反应生成H2O2,随后H2O2被催化分解成活性自由基来降解矿化有机物.实验中了考察了pH,阴极电压,转速等实验条件对系统生成H2O2能力的影响.结果表明,在pH=3,阴极电压-0.8 V vs. SCE,转速为400 r·min-1条件下,经过75 min反应H2O2的积累浓度有最大值(51.5 mg·L-1).实验证明该系统对四环素有较好的降解和矿化效果.以1.0 mmol·L-1的Fe2+作为催化剂,紫外/电Fenton耦合转盘系统可以在45 min内将初始浓度50 mg·L-1四环素降解94.2%且90 min时TOC的去除率为68.2%.紫外/电Fenton处理效果明显优于电Fenton系统.进一步实验分析发现,紫外线的引入可以通过两种途径来提升电Fenton的处理效果.一方面紫外光可以促进Fe3+还原成Fe2+,加速体系铁离子循环,从而提升电Fenton的处理效果;另一方面还可以通过直接激发H2O2分解成活性自由基加速降解四环素.

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