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零价铁还原和过硫酸盐氧化联合降解水中硝基苯

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杨世迎, 杨鑫, 梁婷, 马楠, 王平. 零价铁还原和过硫酸盐氧化联合降解水中硝基苯[J]. 环境化学, 2012, 31(5): 682-686.
引用本文: 杨世迎, 杨鑫, 梁婷, 马楠, 王平. 零价铁还原和过硫酸盐氧化联合降解水中硝基苯[J]. 环境化学, 2012, 31(5): 682-686.
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YANG Shiying, YANG Xin, LIANG Ting, MA Nan, WANG Ping. Degradation of nitrobenzene by the combined system of zero-valent iron reduction and persulfate oxidation[J]. Environmental Chemistry, 2012, 31(5): 682-686.
Citation: YANG Shiying, YANG Xin, LIANG Ting, MA Nan, WANG Ping. Degradation of nitrobenzene by the combined system of zero-valent iron reduction and persulfate oxidation[J]. Environmental Chemistry, 2012, 31(5): 682-686.
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零价铁还原和过硫酸盐氧化联合降解水中硝基苯

  • 1.

    海洋环境与生态教育部重点实验室, 青岛, 266100;

  • 2.

    中国海洋大学环境科学与工程学院, 青岛, 266100;

  • 3.

    青岛市海润自来水集团有限公司, 青岛, 266002;

  • 4.

    青岛农业大学外国语学院, 青岛, 266109

  • 基金项目:

    中国海洋大学"中央高校基本科研业务费青年教师科研专项基金项目"(20113005)资助.

Degradation of nitrobenzene by the combined system of zero-valent iron reduction and persulfate oxidation

  • 1.

    Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao, 266100, China;

  • 2.

    College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China;

  • 3.

    Qingdao Hairun Water Supply Group Co., LTD, Qingdao, 266002, China;

  • 4.

    College of Foreign Language, Qingdao Agriculture University, Qingdao, 266109, China

  • Fund Project:

  • 摘要: 将零价铁(Fe0)的还原和过硫酸盐(persulfate,PS)的高级氧化技术结合用于水中难降解有机污染物硝基苯的去除.研究结果表明,Fe0在常温常压下可将硝基苯还原生成苯胺,随着Fe0投加量的增加,硝基苯还原为苯胺的速率逐渐增大.PS本身对硝基苯氧化作用不明显,但在Fe0与PS二者联合体系中,硝基苯和苯胺同时被去除,而且随着PS投加量的增加二者被去除的速度也随之增加.在Fe0还原和PS氧化联合处理硝基苯的体系中可能存在两个过程,一是Fe0还原硝基苯产生苯胺和二价铁离子Fe2+,二是Fe2+催化PS产生强氧化性的硫酸根自由基将苯胺氧化降解.
    Abstract: The degradation of nitrobenzene by the combined system of zero-valent iron reduction and persulfate oxidation was studied in this paper. At ambient temperature and pressure, zero-valent iron (Fe0) was used to decompose nitrobenzene, and aniline was formed accordingly. Experimental results showed that increasing Fe0 dosage accelerated nitrobenzene removal rate. Persulfate (PS) alone did not degradate nitrobenzene. However, there existed a synergistic effect in the combined system of Fe0 and PS. With the increase of PS dosage, the removal of nitrobenzene and aniline was accelerated. There existed two processes in the combined system. Firstly, nitrobenzene was decomposed by Fe0 to produce aniline and Fe2+. And secondly, the produced aniline was oxidized by the sulfate free radical SO�-4, which was generated from Fe2+ catalyzing PS decomposition.
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  • [1] 陈宜菲, 陈少瑾. Fe0还原土壤中不同结构甲基和氯代硝基苯[J]. 环境科学与管理, 2008, 33(11): 69-71
    [2] Li Y P, Cao H B, Liu C M, et al. Electrochemical reduction of nitrobenzene at carbon nanotube electrode[J]. J Hazard Mater, 2007, 148(1/2): 158-163
    [3] Nishino S F, Spain J C. Degradation of nitrobenzene by a pseudomonaspseudoalcaligenes[J]. Appl Environ Microbiol, 1993, 59 (8): 2520-2525
    [4] Nefso E K, Burns S E, McGrathb C J. Degradation kinetics of TNT in the presence of six mineral surfaces and ferrous iron[J]. J Hazard Mater, 2005, 123 (1/3) 79-88
    [5] Ruiz N, Seal S, Reinhart D. Surface chemical reactivity in selected zero-valent iron samplesused in groundwater remediatio[J]. J Hazard Mater, 2000, 38(80): 107-117
    [6] 杨世迎, 陈友媛, 胥慧真, 等. 过硫酸盐活化高级氧化新技术[J]. 化学进展, 2008, 20(9): 1433-1438
    [7] 杨世迎, 杨鑫, 王萍, 等. 过硫酸盐高级氧化技术的活化方法研究进展[J]. 现代化工, 2009, 29(4): 13-19
    [8] Dong J, Zhao Y S, Zhao R, et al. Effects of pH and particle size on kinetics of nitrobenzene reduction by zero-valent iron[J]. J Environ Sci, 2010, 22(11): 1741-1747
    [9] 吕国晓, 尹军, 刘蕾, 等. pH值对零价铁还原降解模拟地下水中硝基苯的影响[J]. 环境化学, 2009, 28(3): 355-359
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  • 收稿日期:  2011-09-21

零价铁还原和过硫酸盐氧化联合降解水中硝基苯

  • 1.  海洋环境与生态教育部重点实验室, 青岛, 266100;
  • 2.  中国海洋大学环境科学与工程学院, 青岛, 266100;
  • 3.  青岛市海润自来水集团有限公司, 青岛, 266002;
  • 4.  青岛农业大学外国语学院, 青岛, 266109
  • 收稿日期:  2011-09-21
基金项目:

中国海洋大学"中央高校基本科研业务费青年教师科研专项基金项目"(20113005)资助.

摘要: 将零价铁(Fe0)的还原和过硫酸盐(persulfate,PS)的高级氧化技术结合用于水中难降解有机污染物硝基苯的去除.研究结果表明,Fe0在常温常压下可将硝基苯还原生成苯胺,随着Fe0投加量的增加,硝基苯还原为苯胺的速率逐渐增大.PS本身对硝基苯氧化作用不明显,但在Fe0与PS二者联合体系中,硝基苯和苯胺同时被去除,而且随着PS投加量的增加二者被去除的速度也随之增加.在Fe0还原和PS氧化联合处理硝基苯的体系中可能存在两个过程,一是Fe0还原硝基苯产生苯胺和二价铁离子Fe2+,二是Fe2+催化PS产生强氧化性的硫酸根自由基将苯胺氧化降解.

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