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施周, 毕晨, 周石庆, 卜令君. 铁电极活化过硫酸盐对金橙G的降解[J]. 环境工程学报, 2017, 11(3): 1335-1340. doi: 10.12030/j.cjee.201511172
引用本文: 施周, 毕晨, 周石庆, 卜令君. 铁电极活化过硫酸盐对金橙G的降解[J]. 环境工程学报, 2017, 11(3): 1335-1340. doi: 10.12030/j.cjee.201511172
shu
SHI Zhou, BI Chen, ZHOU Shiqing, BU Lingjun. Degradation of iron electrode as sodium persulfate activator for orange G[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1335-1340. doi: 10.12030/j.cjee.201511172
Citation: SHI Zhou, BI Chen, ZHOU Shiqing, BU Lingjun. Degradation of iron electrode as sodium persulfate activator for orange G[J]. Chinese Journal of Environmental Engineering, 2017, 11(3): 1335-1340. doi: 10.12030/j.cjee.201511172
shu

铁电极活化过硫酸盐对金橙G的降解

  • 1.

    湖南大学土木工程学院, 长沙 410082

  • 2.

    湖南大学建筑安全与节能教育部重点实验室, 长沙 410082

  • 基金项目:

    国家科技支撑计划资助项目（2012BAJ24B03）

  • 中图分类号: X703

Degradation of iron electrode as sodium persulfate activator for orange G

  • 1.

    College of Civil Engineering, Hunan University, Changsha 410082, China

  • 2.

    Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Hunan University, Changsha 410082, China

  • Fund Project:

  • 摘要: 研究了铁电极活化过硫酸盐（EC/PDS）产生的具有强氧化性的硫酸根自由基（SO4-·）对溶液中金橙G（orange G，OG）的氧化降解行为。重点考察了电流强度、PDS投加量、金橙G初始浓度、溶液初始pH值以及共存阴离子对金橙G降解速率的影响。实验结果表明：相比单独絮凝（EC）和投加过硫酸盐（PDS），EC/PDS体系能够有效地去除金橙G；金橙G的去除效率随着电流强度的增大而增大，随着PDS投加量的增大而增大，随着金橙G初始浓度增大而减小；较低的溶液pH值更利于OG的降解。水中共存阴离子对金橙G的降解存在着不同程度的抑制作用：PO43- > CO32- > Cl-。此外，通过加入不同的淬灭剂（甲醇和叔丁醇），确定了体系中主要存在的自由基。
    Abstract: The paper deals with the degradation of orange G(OG) in aqueous solutions by electrochemically activated peroxydisulfate(EC/PDS)oxidation. These processes are based on the generation of sulfate radicals(SO4-·), which are strong oxidizing species.The effects of current intensity, PDS dosage, initial OG concentrations, initial pH of solution and coexisting anions in solution were studied. The results show that EC/PDS system can degrade OG more effectively than EC and PDS alone. The degradation rate of OG increases with the increase of the current intensity and the dosage of PDS, the degradation rate of OG decreases with the increase of the initial OG concentrations. Low initial pH are favorable for OG degradation. Coexisting anions exhibit different degrees of inhibition effects, the degree of inhibition abiding from strong to weak by the following order:PO43- > CO32- > Cl-. Furthermore, the main radicals are determined by adding different scavengers (methanol and tert-butanol).
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  • [1] 张斌, 刘金海, 冯晓辉. 印染废水污染现状及其处理技术的发展[J]. 科技信息, 2011(5):376-377
    [2] SZYGUŁA A, GUIBAL E, RUIZ M, et al. The removal of sulphonated azo-dyes by coagulation with chitosan[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2008, 330(2/3):219-226
    [3] RAMAKRISHNA K R, VIRARAGHAVAN T. Dye removal using low cost adsorbents[J]. Water Science and Technology, 1997, 36(2/3):189-196
    [4] MAJEWSKA-NOWAK K, WINNICKI T, WIS'NIEWSKI J. Effect of flow conditions on ultrafiltration efficiency of dye solutions and textile effluents[J]. Desalination, 1989, 71(2):127-135
    [5] XU Xiangrong, LI Xiangzhong. Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion[J]. Separation and Purification Technology, 2010, 72(1):105-111
    [6] LIANG Chenju, BRUELL C J, MARLEY M C, et al. Persulfate oxidation for in situ remediation of TCE. I. Activated by ferrous ion with and without a persulfate-thiosulfate redox couple[J]. Chemosphere, 2004, 55(9):1213-1223
    [7] JOHNSON R L, TRATNYEK P G, JOHNSON R O B. Persulfate persistence under thermal activation conditions[J]. Environmental Science & Technology, 2008, 42(24):9350-9356
    [8] FANG Jingyun, SHANG C. Bromate formation from bromide oxidation by the UV/persulfate process[J]. Environmental Science & Technology, 2012, 46(16):8976-8983
    [9] ANIPSITAKIS G P, DIONYSIOU D D. Radical generation by the interaction of transition metals with common oxidants[J]. Environmental Science & Technology, 2004, 38(13):3705-3712
    [10] 杨梅梅, 周少奇, 刘聃, 等. 活性炭催化过硫酸钠降解金橙G动力学[J]. 环境科学, 2013, 34(3):962-967
    [11] 占昌朝, 陈义, 严平, 等. 微波促进Fe@MCM-48催化K2S2O8降解甲基橙废水[J]. 环境工程学报, 2015, 9(7):3134-3140
    [12] HOUSE D A. Kinetics and mechanism of oxidations by peroxydisulfate[J]. Chemical Reviews, 1962, 62(3):185-203
    [13] ZUO Zhihua, CAI Zhongli, KATSUMURA Y, et al. Reinvestigation of the acid-base equilibrium of the (bi)carbonate radical and pH dependence of its reactivity with inorganic reactants[J]. Radiation Physics and Chemistry, 1999, 55(1):15-23
    [14] MILLERO F J, SOTOLONGO S, IZAGUIRRE M. The oxidation kinetics of Fe(Ⅱ)in seawater[J]. Geochimica et Cosmochimica Acta, 1987, 51(4):793-801
    [15] SMITH R M, MARTELL A E. Critical Stability Constants[M]. New York:Plenum Press, 1974
    [16] NETA P, HUIE R E, ROSS A B. Rate constants for reactions of inorganic radicals in aqueous solution[J]. Journal of Physical and Chemical Reference Data, 1988, 17(3):1027-1284
    [17] STUMM W, MORGAN J J. Aquatic Chemistry:Chemical Equilibria and Rates in Natural Waters[M]. New York:John Wiley & Sons, 1996
    [18] GAO Shanshan, DU Mao'an, TIAN Jiayu, et al. Effects of chloride ions on electro-coagulation-flotation process with aluminum electrodes for algae removal[J]. Journal of Hazardous Materials, 2010, 182(1/2/3):827-834
    [19] 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
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  • 收稿日期:  2016-01-29
  • 刊出日期:  2017-03-10

铁电极活化过硫酸盐对金橙G的降解

  • 1.  湖南大学土木工程学院, 长沙 410082
  • 2.  湖南大学建筑安全与节能教育部重点实验室, 长沙 410082
  • 收稿日期:  2016-01-29
基金项目:

国家科技支撑计划资助项目（2012BAJ24B03）

摘要: 研究了铁电极活化过硫酸盐（EC/PDS）产生的具有强氧化性的硫酸根自由基（SO4-·）对溶液中金橙G（orange G，OG）的氧化降解行为。重点考察了电流强度、PDS投加量、金橙G初始浓度、溶液初始pH值以及共存阴离子对金橙G降解速率的影响。实验结果表明：相比单独絮凝（EC）和投加过硫酸盐（PDS），EC/PDS体系能够有效地去除金橙G；金橙G的去除效率随着电流强度的增大而增大，随着PDS投加量的增大而增大，随着金橙G初始浓度增大而减小；较低的溶液pH值更利于OG的降解。水中共存阴离子对金橙G的降解存在着不同程度的抑制作用：PO43- > CO32- > Cl-。此外，通过加入不同的淬灭剂（甲醇和叔丁醇），确定了体系中主要存在的自由基。

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