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非贵金属催化还原水中的硝酸盐氮

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叶舒帆, 胡筱敏, 和英滇, 张杨. 非贵金属催化还原水中的硝酸盐氮[J]. 环境化学, 2011, 30(10): 1711-1717.
引用本文: 叶舒帆, 胡筱敏, 和英滇, 张杨. 非贵金属催化还原水中的硝酸盐氮[J]. 环境化学, 2011, 30(10): 1711-1717.
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YE Shufan, HU Xiaomin, HE Yingdian, ZHANG Yang. STUDY ON NO3--N REMOVAL IN WATER BY NON-PRECIOUS METAL CATALYTIC REDUCTION[J]. Environmental Chemistry, 2011, 30(10): 1711-1717.
Citation: YE Shufan, HU Xiaomin, HE Yingdian, ZHANG Yang. STUDY ON NO3--N REMOVAL IN WATER BY NON-PRECIOUS METAL CATALYTIC REDUCTION[J]. Environmental Chemistry, 2011, 30(10): 1711-1717.
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非贵金属催化还原水中的硝酸盐氮

  • 1.

    东北大学资源与土木工程学院, 沈阳, 110004;

  • 2.

    温州市环境保护设计科学研究院, 温州, 325027;

  • 3.

    温州医学院信息与工程学院, 温州, 325035

  • 基金项目:

    国家科技重大专项课题(20092X07526-006)资助.

STUDY ON NO3--N REMOVAL IN WATER BY NON-PRECIOUS METAL CATALYTIC REDUCTION

  • 1.

    College of Resource and Civil Engineering, Northeastern University, Shenyang, 110004, China;

  • 2.

    Wenzhou Environmental Protection Design & Research Institute, Wenzhou, 325027, China;

  • 3.

    Wenzhou Medical College of Information & Engineering, Wenzhou, 325035, China

  • Fund Project:

  • 摘要: 基于双金属催化还原NO3--N的机理分析和常见金属催化电解脱硝技术的初步研究成果,对非贵金属元素催化还原水中NO3--N进行了实验研究.实验数据表明,Fe、Cu、Co、Pb和Zn 5种元素在阴极电场作用下对NO3--N具有较高的催化还原活性;NO3--N催化还原主要产物为NO2--N和NH4+-N,产物比例受催化元素选择性和电解条件的影响;电流密度、极板距离和搅拌强度对NO3--N的催化还原均有一定程度的影响,其影响规律和催化反应的控制步骤密切相关.Fe、Cu和Co 3种元素修饰阴极的催化电解无害化去除NO3--N实验结果表明,以500 mg·L-1NaCl(以Cl-计)为支持电解质,在温度24 ℃-26 ℃,电流密度6 mA·cm-2、极板距离6 mm、搅拌强度450 r·min-1条件下,50 mg·L-1NO3--N模拟废水电解150 min后,NO3--N和TN去除率均达90%以上.
    Abstract: In this work, research of NO3--N catalytic reduction by non-precious metals was carried out, based on the mechanism analysis of bimetallic catalytic reduction on NO3--N and the research of common metallic catalytic electrolysis denitrification. The results indicate that Fe, Cu, Co, Pb and Zn presented high catalytic reductive activity for NO3--N in cathode field. The major products of NO3--N catalytic reduction were NO2--N and NH4+-N and the proportion of the reduction products was influenced by the catalyst selectivity and the electrolysis condition. Current density, plate distance and stirring intensity had certain effect on catalytic reduction respectively. And the influence was associated with the control steps of catalytic reaction. The experiment of NO3--N removal using Fe, Cu or Co modified cathode in catalytic electrolysis reaction showed that the removal rates of NO3--N and TN in 50 mg·L-1 NO3--N stimulated wastewater reached 90% after 150 mins when electrolyzed at the supporting electrolyte of 500 mg·L-1 NaCl(measured by Cl-), temperature of 24 ℃-26 ℃, current density of 6 mA·cm-2, plate distance of 6 mm, and stirring intensity of 450 r·min-1.
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  • [1] Vorlop K D, Tacke T. Erste schritte auf dem weg zur edelmetall katalysierten nitrund nitritent fernung aus trinkwasser[J]. Chem Ing Tech, 1989,61:836-845
    [2] Hoerold S, Tacke T, Vorlop K D. Catalytic removal of nitrate and nitrite from drinking water-1. screening for hydrogenation catalyst and influence of reaction conditions on activity and selectivity [J]. Environ Tech, 1993,14(10):931-945
    [3] Prusse U, Hahnlein M, Daum J, et al. Improving the catalytic nitrate reduction [J]. Catal Today, 2000,55(1/2):79-90
    [4] Gauthard F, Epron F, Barbier J. Palladium and platinum-based catalysts in the catalytic reduction of nitrate in water: effect of copper, silver, or gold addition [J]. J Catal, 2003,220(1):182-191
    [5] Jacinto S, Hannelore V. Catalytic hydrogenation of nitrates in water over a bimetallic catalyst [J]. Appl Catal B: Environ, 2005, 57(4):247-256
    [6] Wang Y, Qu J H, Liu H J. Effect of liquid property on adsorption and catalytic reduction of nitrate over hydrotalcite-supported Pd-Cu catalyst [J]. J Mol Catal A: Chem, 2007,272(1/2):31-37
    [7] Barrabes N, Just J, Dafinov A, et al. Catalytic reduction of nitrate on Pt-Cu and Pd-Cu on active carbon using continuous reactor the effect of copper nanoparticles[J]. Appl Catal B: Environ, 2006 62(1/2): 77-85
    [8] Garron A, Epron F. Use of formic as reducing agent for application in catalytic reduction of nitrate in water [J].Water Res,2005, 39(13): 3073-3081
    [9] Chaplin B, Roundy E, Guy K, et al. Effects of natural water ions and humic acid on catalytic nitrate reduction kinetics using an alumina supported Pd-Cu catalyst[J].Environ Sci Tech, 2006, 40 (9): 3075-3081
    [10] 高建峰, 徐春燕, 王久芬, 等. 无机膜复合催化反应器脱除水中硝酸盐氮[J]. 环境化学, 2008, 27(5): 596-599
    [11] 张燕, 陈英旭, 刘宏远. Pd-Cu/γ-Al2O3催化还原硝酸盐的研究[J]. 催化学报, 2003, 24(4): 270-274
    [12] 周丽, 邓慧萍, 桑松表. 多孔钛板负载Pd-Cu催化还原水中硝酸盐氮的研究[J]. 环境化学, 2008, 27(2): 172-176
    [13] 周丽, 邓慧萍, 刘振中, 等. 多孔钛板负载Pd-Sn电催化去除硝酸盐氮的研究 [J]. 供水技术, 2007, 1(5): 32-36
    [14] Warna J, Turunen I, Salmi T, et al. Kinetics of nitrate reduction in monolith reactor [J]. Chem Eng Sci, 1994, 49(28B): 5763-5773
    [15] 叶舒帆, 胡筱敏, 张杨, 等. 一种新型电化学法处理硝态氮废水的初步研究[J]. 环境科学, 2010, 31(8): 1827-1833
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  • 收稿日期:  2010-12-10

非贵金属催化还原水中的硝酸盐氮

  • 1.  东北大学资源与土木工程学院, 沈阳, 110004;
  • 2.  温州市环境保护设计科学研究院, 温州, 325027;
  • 3.  温州医学院信息与工程学院, 温州, 325035
  • 收稿日期:  2010-12-10
基金项目:

国家科技重大专项课题(20092X07526-006)资助.

摘要: 基于双金属催化还原NO3--N的机理分析和常见金属催化电解脱硝技术的初步研究成果,对非贵金属元素催化还原水中NO3--N进行了实验研究.实验数据表明,Fe、Cu、Co、Pb和Zn 5种元素在阴极电场作用下对NO3--N具有较高的催化还原活性;NO3--N催化还原主要产物为NO2--N和NH4+-N,产物比例受催化元素选择性和电解条件的影响;电流密度、极板距离和搅拌强度对NO3--N的催化还原均有一定程度的影响,其影响规律和催化反应的控制步骤密切相关.Fe、Cu和Co 3种元素修饰阴极的催化电解无害化去除NO3--N实验结果表明,以500 mg·L-1NaCl(以Cl-计)为支持电解质,在温度24 ℃-26 ℃,电流密度6 mA·cm-2、极板距离6 mm、搅拌强度450 r·min-1条件下,50 mg·L-1NO3--N模拟废水电解150 min后,NO3--N和TN去除率均达90%以上.

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