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铁电絮凝产羟自由基氧化降解地下水中磺胺

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张严, 魏桃员, 符文晶, 谢世伟. 铁电絮凝产羟自由基氧化降解地下水中磺胺[J]. 环境工程学报, 2019, 13(4): 871-877. doi: 10.12030/j.cjee.201809139
引用本文: 张严, 魏桃员, 符文晶, 谢世伟. 铁电絮凝产羟自由基氧化降解地下水中磺胺[J]. 环境工程学报, 2019, 13(4): 871-877. doi: 10.12030/j.cjee.201809139
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ZHANG Yan, WEI Taoyuan, FU Wenjing, XIE Shiwei. Hydroxyl radical induced by iron electrocoagulation for oxidative degradation of sulfonamide in groundwater[J]. Chinese Journal of Environmental Engineering, 2019, 13(4): 871-877. doi: 10.12030/j.cjee.201809139
Citation: ZHANG Yan, WEI Taoyuan, FU Wenjing, XIE Shiwei. Hydroxyl radical induced by iron electrocoagulation for oxidative degradation of sulfonamide in groundwater[J]. Chinese Journal of Environmental Engineering, 2019, 13(4): 871-877. doi: 10.12030/j.cjee.201809139
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铁电絮凝产羟自由基氧化降解地下水中磺胺

  • 1.

    武汉科技大学城市建设学院，武汉 430065

  • 基金项目:

    国家自然科学基金资助项目51808415

    武汉科技大学青年科技骨干培养计划项目2017xz023国家自然科学基金资助项目(51808415)

    武汉科技大学青年科技骨干培养计划项目(2017xz023)

Hydroxyl radical induced by iron electrocoagulation for oxidative degradation of sulfonamide in groundwater

  • 1.

    School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China

  • Fund Project:

  • 摘要: 为了揭示铁电絮凝(EC)过程中尚未被认识的羟自由基氧化机制，以磺胺污染的地下水为对象进行电絮凝降解研究。通过淬灭自由基、厌氧电絮凝和加Fe(III)盐等对照实验，探究反应体系是否存在羟自由基氧化机制；并对不同电解质、溶液pH、初始磺胺浓度、电流强度条件下的电絮凝降解磺胺效率进行了测定。研究结果表明：铁电絮凝处理磺胺废水反应体系存在羟自由基氧化降解磺胺机制；地下水中，阴离子对铁电絮凝氧化效果的影响较小。对模拟江汉平原含0.2 mg·L-1 As(III)和0.1 mg·L-1磺胺的地下水进行铁电絮凝处理，在30 mA的电流条件下，As(III)在4 h内的去除率达到100%，而磺胺达到68.6%。
    Abstract: In order to reveal the possible hydroxyl radical oxidation mechanism during iron electrocoagulation(EC), we investigated the degradation of sulfonamide in contaminated groundwater. Whether the hydroxyl radical oxidation mechanism for sulfonamide degradation existed or not in EC system was explored through the control experiments of radical quenching, anaerobic EC and Fe(III) salt addition. The sulfonamide degradation efficiencies by EC under different electrolytes, solution pH, initial concentration of sulfonamide and current intensity were tested. The results showed that the hydroxyl radical oxidation mechanism of sulfonamide degradation occurred during EC process; in groundwater, anions had slight influence on sulfonamide oxidation by EC. Furthermore, EC was used to treat the simulated groundwater in Jianghan plain with 0.2 mg·L-1 As(III) and 0.1 mg·L-1 sulfonamide, it could remove 100% As(III) and 68.6% sulfonamide after 4 h treatment at the current of 30 mA.
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  • [1] 吴爱民, 荆继红, 宋博. 略论中国水安全问题与地下水的保障作用[J]. 地质学报, 2016, 90(10): 2939-2947.
    [2] 中国人民共和国水利部. 中国水资源公报[M]. 北京: 中国水利水电出版社, 2016.
    [3] TONG L, HUANG S, WANG Y, et al. Occurrence of antibiotics in the aquatic environment of Jianghan Plain, central China[J]. Science of the Total Environment, 2014, 497: 180-187.
    [4] JONES O A, LESTER J N, VOULVOULIS N. Pharmaceuticals: A threat to drinking water? [J]. Trends in Biotechnology, 2005, 23(4): 163-167.
    [5] BOXALL A B A, BLACKWELL P, CAVALLO R, et al. The sorption and transport of a sulphonamide antibiotic in soil systems[J]. Toxicology Letters, 2002, 131: 19-28.
    [6] 张从良, 王岩, 王福安. 磺胺类药物在土壤中的微生物降解[J]. 农业环境科学学报, 2007, 26(5): 1658-1662.
    [7] HUBER M M, CANONICA S, PARK G Y, et al. Oxidation of pharmaceuticals during ozonation and advanced oxidation processes[J]. Environmental Science & Technology, 2003, 37: 1016-1024.
    [8] RADJENOVIC J, PETROVIC M, VENTURA F, et al. Rejection of pharmaceuticals in nanofiltration and reverse osmosis membrane drinking water treatment[J]. Water Research, 2008 , 42(14): 3601-3610.
    [9] SHARMA V K. Oxidantive transformations of envioronmental pharmaceuticas by Cl2, ClO2, O3, and Fe(IV): Kinetics assessment [J]. Chemosphere, 2008, 73(9): 1379-1386.
    [10] BRITTO J M, RANGEL M C. Advanced oxidation orocess of phenolic compounds in industrial wasterwater[J]. Quim Nova, 2008, 31: 114-122.
    [11] AMROSE S, GADGIL A, SRINIVASAN V, et al. Arsenic removal from groundwater using iron electrocoagulation: Effect of charge dosage rate[J]. Journal of Environmental Science and Health, 2013, 48(9): 1019-1030.
    [12] LI L, GENUCHTEN C M VAN, ADDY S E, et al. Modeling As(III) oxidation and removal with iron electrocoagulation in groundwater[J]. Environmental Science & Technology, 2012, 46(21): 12038-12045.
    [13] XIE S, YUAN S, LIAO P, et al. Iron-anode enhanced sand filter for arsenic removal from tube well water[J]. Environmental Science & Technology, 2017, 51(2): 889-896.
    [14] TONG M, YUAN S, ZHANG P, et al. Electrochemically induced oxidative precipitation of Fe (II) for As (III) oxidation and removal in synthetic groundwater[J]. Environmental Science & Technology, 2014, 48(9): 5145-5153.
    [15] BATAINEH H, PESTOVSKY O, BAKAC A. pH-induced mechanistic changeover from hydroxyl radicals to iron (IV) in the Fenton reaction[J]. Chemical Science, 2012, 3(5): 1594-1599.
    [16] KEENAN C R, SEDLAK D L. Factors affecting the yield of oxidants from the reaction of nanoparticulate zero-valent iron and oxygen[J]. Environmental Science & Technology, 2008, 42(4): 1262-1267.
    [17] BUXTON G V, GREENSTOCK C L, HELMAN W P, et al. Critical review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (·OH/?O) in aqueous solution[J]. Journal of Physical and Chemical Reference Data, 1988, 17(2): 513-886.
    [18] PHAM A N, WAITE T D. Oxygenation of Fe (II) in natural waters revisited: Kinetic modeling approaches, rate constant estimation and the importance of various reaction pathways[J]. Geochimicaet Cosmochimica Acta, 2008, 72(15): 3616-3630.
    [19] LAKSHMANAN D, CLIFFORD D A, SAMANTA G. Ferrous and ferric ion generation during iron electrocoagulation[J]. Environmental Science & Technology, 2009, 43(10): 3853-3859.
    [20] HUG S J, LEUPIN O. Iron-catalyzed oxidation of arsenic (III) by oxygen and by hydrogen peroxide: pH-dependent formation of oxidants in the Fenton reaction[J]. Environmental Science & Technology, 2003, 37(12): 2734-2742.
    [21] BOCOS E, BRILLAS E, SANROMA?N M A, et al. Electrocoagulation: Simply a phase separation technology? The case of bronopol compared to its treatment by EAOPs[J]. Environmental Science & Technology, 2016, 50(14): 7679-7686.
    [22] BUXTON G V, ELLIOT A J. Rate constant for reaction of hydroxyl radicals with bicarbonate ions[J]. Radiation Physics & Chemistry, 1986, 27(3): 241-243.
    [23] CHEN S N, HOFFMAN M Z, PARSONS G H. Reactivity of the carbonate radical toward aromatic compounds in aqueous solution[J]. Journal of Physical Chemistry, 1975, 79(18): 1911-1912.
    [24] BIANCO B, DEMICHELIS I. Fenton treatment of complex industrial wastewater: Optimization of process conditions by surface response method[J]. Journal of Hazardous Materials, 2011, 186(2/3): 1733-1738.
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  • 刊出日期:  2019-04-15

铁电絮凝产羟自由基氧化降解地下水中磺胺

  • 1. 武汉科技大学城市建设学院，武汉 430065
基金项目:

国家自然科学基金资助项目51808415

武汉科技大学青年科技骨干培养计划项目2017xz023国家自然科学基金资助项目(51808415)

武汉科技大学青年科技骨干培养计划项目(2017xz023)

摘要: 为了揭示铁电絮凝(EC)过程中尚未被认识的羟自由基氧化机制，以磺胺污染的地下水为对象进行电絮凝降解研究。通过淬灭自由基、厌氧电絮凝和加Fe(III)盐等对照实验，探究反应体系是否存在羟自由基氧化机制；并对不同电解质、溶液pH、初始磺胺浓度、电流强度条件下的电絮凝降解磺胺效率进行了测定。研究结果表明：铁电絮凝处理磺胺废水反应体系存在羟自由基氧化降解磺胺机制；地下水中，阴离子对铁电絮凝氧化效果的影响较小。对模拟江汉平原含0.2 mg·L-1 As(III)和0.1 mg·L-1磺胺的地下水进行铁电絮凝处理，在30 mA的电流条件下，As(III)在4 h内的去除率达到100%，而磺胺达到68.6%。

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