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活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠

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朱世妮, 徐颖, 叶正芳. 活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠[J]. 环境工程学报, 2012, 6(10): 3503-3508.
引用本文: 朱世妮, 徐颖, 叶正芳. 活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠[J]. 环境工程学报, 2012, 6(10): 3503-3508.
shu
Zhu Shini, Xu Ying, Ye Zhengfang. Treatment of dinitrotoluene sulfonates in TNT red water by active carbon supported and active coke supported NZVI[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3503-3508.
Citation: Zhu Shini, Xu Ying, Ye Zhengfang. Treatment of dinitrotoluene sulfonates in TNT red water by active carbon supported and active coke supported NZVI[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3503-3508.
shu

活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠

  • 1.

    辽宁工程技术大学资源与环境工程学院, 阜新 123000

  • 2.

    北京大学环境工程系, 水沙科学教育部重点实验室, 北京 100871

  • 基金项目:

    国防科工局基础产品创新计划

  • 中图分类号: X703

Treatment of dinitrotoluene sulfonates in TNT red water by active carbon supported and active coke supported NZVI

  • Fund Project:

  • 摘要: 以活性焦和活性炭为载体,采用液相还原法制备了负载纳米铁,比较了两种负载纳米铁对TNT红水中难降解物质二硝基甲苯磺酸钠(包括2,4-DNT-3-SO3Na和2,4-DNT-5-SO3Na)的去除能力。实验结果表明,作为负载材料活性焦的相对有效比表面积与孔体积要优于活性炭,而且有利于更好地发挥出负载纳米铁的优势。单位面积活性焦负载纳米铁去除2,4-DNT-5-SO3Na的能力明显高于活性炭负载纳米铁,单位面积活性焦负载纳米铁去除2,4-DNT-3-SO3Na的能力在较小投加量条件下高于活性炭负载纳米铁,但均随投加量的增加而下降;而对于活性炭负载纳米铁,其单位面积去除能力基本不受投加量的影响,而且对二硝基甲苯磺酸钠的去除率高于活性焦负载纳米铁。耦合混凝沉淀的总去除效果表明,单位面活性焦负载纳米铁对2,4-DNT-5-SO3Na的去除能力高于活性炭负载纳米铁,而对2,4-DNT-3-SO3Na的去除能力则低于活性炭负载纳米铁。
    Abstract: Activated carbon supported nanoscale zero-valent iron (NZVI/AC) and activated coke supported nanoscale zero-valent iron (NZVI/ACoke) were prepared using liquid phase reducing method.Their transformation capacities of 2,4-DNT-3-SO3Na and 2,4-DNT-5-SO3Na,a kind of degradation refractory nitro aromatic compounds,were compared.The experimental results revealed that activated coke was a better choose for supporting NZVI than activated carbon for the larger relative effective surface area and pore volume as well as enhancing the synergistic action between NZVI and carrier.NZVI/ACoke showed a higher transformation capacity of 2,4-dinitrotoluene sulfonates per unit area than NZVI/AC at first,but it decreased as the amount of NZVI/ACoke increased.However,the area-modified transformation capacities of NZVI/AC almost did not change with increasing amounts of NZVI/AC,and the removal efficiencies of 2,4-dinitrotoluene sulfonates were higher than those gained by NZVI/ACoke.When combined with coagulation-sedimentation,NZVI/ACoke showed a higher transformation capacity of 2,4-DNT-5-SO3Na per unit area than NZVI/AC,but a lower transformation capacity of 2,4-DNT-3-SO3Na than NZVI/AC.
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  • 收稿日期:  2011-09-18
  • 刊出日期:  2012-10-16
朱世妮, 徐颖, 叶正芳. 活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠[J]. 环境工程学报, 2012, 6(10): 3503-3508.
引用本文: 朱世妮, 徐颖, 叶正芳. 活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠[J]. 环境工程学报, 2012, 6(10): 3503-3508.
shu
Zhu Shini, Xu Ying, Ye Zhengfang. Treatment of dinitrotoluene sulfonates in TNT red water by active carbon supported and active coke supported NZVI[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3503-3508.
Citation: Zhu Shini, Xu Ying, Ye Zhengfang. Treatment of dinitrotoluene sulfonates in TNT red water by active carbon supported and active coke supported NZVI[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3503-3508.
shu

活性焦和活性炭负载纳米铁处理TNT红水中的二硝基甲苯磺酸钠

  • 1. 辽宁工程技术大学资源与环境工程学院, 阜新 123000
  • 2. 北京大学环境工程系, 水沙科学教育部重点实验室, 北京 100871
  • 收稿日期:  2011-09-18
基金项目:

国防科工局基础产品创新计划

摘要: 以活性焦和活性炭为载体,采用液相还原法制备了负载纳米铁,比较了两种负载纳米铁对TNT红水中难降解物质二硝基甲苯磺酸钠(包括2,4-DNT-3-SO3Na和2,4-DNT-5-SO3Na)的去除能力。实验结果表明,作为负载材料活性焦的相对有效比表面积与孔体积要优于活性炭,而且有利于更好地发挥出负载纳米铁的优势。单位面积活性焦负载纳米铁去除2,4-DNT-5-SO3Na的能力明显高于活性炭负载纳米铁,单位面积活性焦负载纳米铁去除2,4-DNT-3-SO3Na的能力在较小投加量条件下高于活性炭负载纳米铁,但均随投加量的增加而下降;而对于活性炭负载纳米铁,其单位面积去除能力基本不受投加量的影响,而且对二硝基甲苯磺酸钠的去除率高于活性焦负载纳米铁。耦合混凝沉淀的总去除效果表明,单位面活性焦负载纳米铁对2,4-DNT-5-SO3Na的去除能力高于活性炭负载纳米铁,而对2,4-DNT-3-SO3Na的去除能力则低于活性炭负载纳米铁。

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