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High selective reduction of nitrate into nitrogen by novel Fe-Cu/D407 composite with excellent stability and activity.

Abstract

In this study, we develop a new composite material of Fe-Cu/D407 composite via using nanoscale zero-valent iron (nZVI) with copper deposited on chelating resin (D407) to remove nitrate from the water. The experimental results show that a remarkable nitrate removal and the selectivity of N2 are 99.9% and 89.7%, respectively, under the anaerobic conditions of Cu/Fe molar ratio of 1:2, pH = 3.0. Even without of inert gas and adjusting the initial pH of the solution, the removal rate of nitrate by Fe-Cu/D407 reached to 85% and the selectivity of nitrogen reached to 55%. Meanwhile, the Fe-Cu/D407 maintained preferable removal efficiency of nitrate (100% - 92%) over a wide pH range of 3-11. In addition, the removal rate of the drinking water, lake water and wastewater from the Fe-Cu/D407 is still very high and the reactivity of Fe-Cu/D407 was relatively unaffected by the presence of dissolved ions in the waters tested. Moreover, the synergetic effect of Fe, Cu and D407 in the composite Fe-Cu/D407 were well investigated for the first time according to the analyses of TPR, XPS and EIS. The catalytic mechanism and denitrification routes were also proposed.

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  • Authors+Show Affiliations

    ,

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.

    ,

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China. Electronic address: 651834492@qq.com.

    ,

    School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China.

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    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.

    ,

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.

    ,

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.

    ,

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.

    Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China. Electronic address: zjp_112@126.com.

    Source

    Environmental pollution (Barking, Essex : 1987) 252:Pt A 2019 May 23 pg 888-896

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    31207573

    Citation

    Tang, Ting-Ting, et al. "High Selective Reduction of Nitrate Into Nitrogen By Novel Fe-Cu/D407 Composite With Excellent Stability and Activity." Environmental Pollution (Barking, Essex : 1987), vol. 252, no. Pt A, 2019, pp. 888-896.
    Tang TT, Xing QJ, Zhang SH, et al. High selective reduction of nitrate into nitrogen by novel Fe-Cu/D407 composite with excellent stability and activity. Environ Pollut. 2019;252(Pt A):888-896.
    Tang, T. T., Xing, Q. J., Zhang, S. H., Mu, Y., Jiang, X. H., Zhou, Z. G., ... Zou, J. P. (2019). High selective reduction of nitrate into nitrogen by novel Fe-Cu/D407 composite with excellent stability and activity. Environmental Pollution (Barking, Essex : 1987), 252(Pt A), pp. 888-896. doi:10.1016/j.envpol.2019.05.071.
    Tang TT, et al. High Selective Reduction of Nitrate Into Nitrogen By Novel Fe-Cu/D407 Composite With Excellent Stability and Activity. Environ Pollut. 2019 May 23;252(Pt A):888-896. PubMed PMID: 31207573.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - High selective reduction of nitrate into nitrogen by novel Fe-Cu/D407 composite with excellent stability and activity. AU - Tang,Ting-Ting, AU - Xing,Qiu-Ju, AU - Zhang,Si-Hai, AU - Mu,Yi, AU - Jiang,Xun-Heng, AU - Zhou,Zhi-Gang, AU - Xiao,Xiao, AU - Zou,Jian-Ping, Y1 - 2019/05/23/ PY - 2019/01/18/received PY - 2019/04/12/revised PY - 2019/05/13/accepted PY - 2019/6/18/pubmed PY - 2019/6/18/medline PY - 2019/6/18/entrez KW - Denitrification routes KW - Mechanism KW - Nanoscale zero-valent iron KW - Nitrate reduction SP - 888 EP - 896 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ. Pollut. VL - 252 IS - Pt A N2 - In this study, we develop a new composite material of Fe-Cu/D407 composite via using nanoscale zero-valent iron (nZVI) with copper deposited on chelating resin (D407) to remove nitrate from the water. The experimental results show that a remarkable nitrate removal and the selectivity of N2 are 99.9% and 89.7%, respectively, under the anaerobic conditions of Cu/Fe molar ratio of 1:2, pH = 3.0. Even without of inert gas and adjusting the initial pH of the solution, the removal rate of nitrate by Fe-Cu/D407 reached to 85% and the selectivity of nitrogen reached to 55%. Meanwhile, the Fe-Cu/D407 maintained preferable removal efficiency of nitrate (100% - 92%) over a wide pH range of 3-11. In addition, the removal rate of the drinking water, lake water and wastewater from the Fe-Cu/D407 is still very high and the reactivity of Fe-Cu/D407 was relatively unaffected by the presence of dissolved ions in the waters tested. Moreover, the synergetic effect of Fe, Cu and D407 in the composite Fe-Cu/D407 were well investigated for the first time according to the analyses of TPR, XPS and EIS. The catalytic mechanism and denitrification routes were also proposed. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/31207573/High_selective_reduction_of_nitrate_into_nitrogen_by_novel_Fe-Cu/D407_composite_with_excellent_stability_and_activity L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(19)30338-0 DB - PRIME DP - Unbound Medicine ER -