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陈西亮, 刘国, 高阳阳, 余雯雯, 张俊杰. 零价纳米铁炭微电解体系去除水中硝酸盐[J]. 环境化学, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
引用本文: 陈西亮, 刘国, 高阳阳, 余雯雯, 张俊杰. 零价纳米铁炭微电解体系去除水中硝酸盐[J]. 环境化学, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
shu
CHEN Xiliang, LIU Guo, GAO Yangyang, YU Wenwen, ZHANG Junjie. Removal of nitrate from water by nano-zero-valent iron-carbon microelectrolysis system[J]. Environmental Chemistry, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
Citation: CHEN Xiliang, LIU Guo, GAO Yangyang, YU Wenwen, ZHANG Junjie. Removal of nitrate from water by nano-zero-valent iron-carbon microelectrolysis system[J]. Environmental Chemistry, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
shu

零价纳米铁炭微电解体系去除水中硝酸盐

  • 1.

    成都理工大学环境与土木工程学院, 成都, 610059;

  • 2.

    地质灾害防治与地质环境保护国家重点实验室, 成都理工大学, 成都, 610059;

  • 3.

    四川省环境保护地下水污染防治与资源安全重点实验室, 成都理工大学, 成都, 610059

  • 基金项目:

    国家科学自然基金（41272266）资助.

Removal of nitrate from water by nano-zero-valent iron-carbon microelectrolysis system

  • 1.

    College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, 610059, China;

  • 2.

    State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, China;

  • 3.

    Sichuan Provincial Environmental Protection key Laboratory of Groundwater Pollution Prevention and Resource Security, Chengdu University of Technology, Chengdu, 610059, China

  • Fund Project: Supported by the National Natural Science Foundation of China (41272266).

  • 摘要: 用液相还原法制备以活性炭为载体的负载型纳米铁（NZVI/AC），采用不同分散剂合成NZVI/AC，对材料进行XRD、SEM等表征，用制备的材料进行硝酸盐批实验，考察不同分散剂条件下合成的材料对硝酸盐氮的还原情况，再进一步分析硝酸盐氮的还原过程以及动力学.结果显示用聚乙烯吡咯烷酮（PVP）作为分散剂得到性能较好的NZVI/AC，且该体系存在微电解作用，硝酸盐氮的还原过程首先是纳米铁对硝酸根的吸附，然后再发生还原反应，产物以氨氮为主，中间产物有亚硝酸盐的生成，符合准一级反应动力学方程.
    Abstract: In this paper, nanoscale zero-valent iron supported on activated carbon (NZVI/AC) was synthesized using a liquid phase reduction method with different dispersants. The NZVI/AC was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The produced NZVI/AC was tested in batch experiments for nitrate removal, and the reduction process and kinetics of nitrate reduction were then studied. The results showed that the performance of the NZVI/AC with polyvinylpyrrolidone (PVP) was better than other samples. In addition, the system had micro electrolysis function. The reduction process of nitrate by NZVI/AC proceeded in two steps:Firstly, nitrate was adsorbed on the nanoscale iron, and then the redox reaction took place. The process obeyed pseudo first order reaction. The main reduction products were ammonia nitrogens, and nitrite was the reaction intermediate.
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  • [1] 吴雨华.欧美国家地下水硝酸盐污染防治研究进展[J].中国农学通报,2011,27(8):284-290.

    WU Y H. Progress of groundwater nitrate pollution and its alleviating methods in european and american countries[J]. Chinese Agricultural Science Bulletin, 2011, 27(8):284-290(in Chinese).

    [2] 罗泽娇,靳孟贵.地下水三氮污染的研究进展[J].水文地质工程地质,2002,29(4):65-69.

    LUO Z J,JIN M G. Research progress of ammonia, nitrite and nitrate pollution in groundwater[J]. Hydrogeology and Engineering Geology, 2002, 29(4):65-69(in Chinese).

    [3] GORDON C C, YANG, LEE H L. Chemical reduction of nitrate by nanosized iron:Kinetics and pathways[J]. Water Research, 2005, 39(5):884-894.
    [4] AHN YOUNG J H, KIM G Y. Effect of NaCl on Cr(Ⅵ) reduction by granular zero valent iron (ZVI) in aqueous solutions[J]. Materials Transactions,2012,53(7):1324-1329.
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    [8] HUANG Y H, ZHANG T C.Kinetics of nitrate reduction by iron at near neutral pH[J].Journal of Environmental Engineering,2002,128(7):604-611.
    [9] 黄园英,秦臻,刘丹丹,等. 纳米铁还原脱氮动力学及其影响因素[J]. 岩矿测试,2011,30(1):53-58.

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  • 收稿日期:  2015-12-30
  • 刊出日期:  2016-08-15
陈西亮, 刘国, 高阳阳, 余雯雯, 张俊杰. 零价纳米铁炭微电解体系去除水中硝酸盐[J]. 环境化学, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
引用本文: 陈西亮, 刘国, 高阳阳, 余雯雯, 张俊杰. 零价纳米铁炭微电解体系去除水中硝酸盐[J]. 环境化学, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
shu
CHEN Xiliang, LIU Guo, GAO Yangyang, YU Wenwen, ZHANG Junjie. Removal of nitrate from water by nano-zero-valent iron-carbon microelectrolysis system[J]. Environmental Chemistry, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
Citation: CHEN Xiliang, LIU Guo, GAO Yangyang, YU Wenwen, ZHANG Junjie. Removal of nitrate from water by nano-zero-valent iron-carbon microelectrolysis system[J]. Environmental Chemistry, 2016, 35(8): 1670-1675. doi: 10.7524/j.issn.0254-6108.2016.08.2015123003
shu

零价纳米铁炭微电解体系去除水中硝酸盐

  • 1.  成都理工大学环境与土木工程学院, 成都, 610059;
  • 2.  地质灾害防治与地质环境保护国家重点实验室, 成都理工大学, 成都, 610059;
  • 3.  四川省环境保护地下水污染防治与资源安全重点实验室, 成都理工大学, 成都, 610059
  • 收稿日期:  2015-12-30
基金项目:

国家科学自然基金（41272266）资助.

摘要: 用液相还原法制备以活性炭为载体的负载型纳米铁（NZVI/AC），采用不同分散剂合成NZVI/AC，对材料进行XRD、SEM等表征，用制备的材料进行硝酸盐批实验，考察不同分散剂条件下合成的材料对硝酸盐氮的还原情况，再进一步分析硝酸盐氮的还原过程以及动力学.结果显示用聚乙烯吡咯烷酮（PVP）作为分散剂得到性能较好的NZVI/AC，且该体系存在微电解作用，硝酸盐氮的还原过程首先是纳米铁对硝酸根的吸附，然后再发生还原反应，产物以氨氮为主，中间产物有亚硝酸盐的生成，符合准一级反应动力学方程.

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