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黄河兰州段悬移质泥沙对氨氮的吸附特性

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武福平, 王颖超, 颜晓飞, 夏传, 肖宇, 霍进彦, 周旋. 黄河兰州段悬移质泥沙对氨氮的吸附特性[J]. 环境工程学报, 2014, 8(8): 3201-3207.
引用本文: 武福平, 王颖超, 颜晓飞, 夏传, 肖宇, 霍进彦, 周旋. 黄河兰州段悬移质泥沙对氨氮的吸附特性[J]. 环境工程学报, 2014, 8(8): 3201-3207.
shu
Wu Fuping, Wang Yingchao, Yan Xiaofei, Xia Chuan, Xiao Yu, Huo Jinyan, Zhou Xuan. Adsorption characteristics of suspended sediment to ammonia nitrogen in Lanzhou section of the Yellow River[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3201-3207.
Citation: Wu Fuping, Wang Yingchao, Yan Xiaofei, Xia Chuan, Xiao Yu, Huo Jinyan, Zhou Xuan. Adsorption characteristics of suspended sediment to ammonia nitrogen in Lanzhou section of the Yellow River[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3201-3207.
shu

黄河兰州段悬移质泥沙对氨氮的吸附特性

  • 1.

    兰州交通大学环境与市政工程学院, 寒旱地区水资源综合利用教育部工程研究中心, 兰州 730070

  • 基金项目:

    长江学者和创新团队发展计划资助项目（IRT0966）

    国家自然科学基金资助项目（51068014）

  • 中图分类号: X703.1

Adsorption characteristics of suspended sediment to ammonia nitrogen in Lanzhou section of the Yellow River

  • 1.

    School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Engineering Research Center of Integrated Availability, Ministry of Education, Lanzhou 730070, China

  • Fund Project:

  • 摘要: 实验研究了黄河兰州段不同粒径的悬浮泥沙对氨氮的吸附行为，拟阐释黄河兰州段水质自净的机制。通过分析探讨了含沙量、氨氮初始浓度、泥沙粒径和化学成分对氨氮吸附过程的影响。结果表明，准二级动力学方程和Langmuir模型能够较好地描述黄河兰州段不同粒径泥沙的吸附动力学和等温吸附过程（R2>0.9）；含沙量对泥沙吸附氨氮作用具有显著影响，且氨氮吸附量和平衡时间与含沙量呈明显负相关性；氨氮初始浓度与氨氮吸附量及平衡时间呈正相关性；同时，泥沙颗粒越细，吸附氨氮的能力越强，吸附容量越大，反应的自发程度越高。此外，泥沙有机质、Fe2O3、Al2O3和MgO的含量随粒径减小而增大，它们对单位质量泥沙最大吸附量（Sm）具有正效应。泥沙的吸附在黄河兰州段水质自净过程中起着一定的促进作用。
    Abstract: The adsorption properties of ammonia nitrogen on the suspended sediment of different particle sizes in the Lanzhou section of the Yellow River were studied in order to explore the mechanism of water self-purification. The effects of factors, for example, sediment amount, concentration of ammonia nitrogen, sediment size and its chemical component on the ammonia nitrogen adsorption were analyzed by the amount of adsorption of ammonia nitrogen. The result indicated that the Langmuir model provides a better description of equilibrium adsorption capacity of ammonia nitrogen on suspended sediment, and the adsorption kinetic fits well to the pseudo-second-order kinetic model in terms of the values of multiple correlation coefficients which are higher than 0.9. Sediment amount has the significant effect on the adsorption of ammonia nitrogen, and both the adsorption capacity and the equilibrium time have the remarkable negative correlations with sediment amount. The initial concentration of ammonia nitrogen is positively correlated with ammonia nitrogen adsorption capacity and equilibrium time. In addition, the decrease of the size of sediment leads to the increase in the ability of adsorption, the adsorption capacity and the spontaneous reaction degree, etc. Moreover, the organic matters, Fe2O3, Al2O3 and MgO in the sediment increase with the decrease in particles size, which has a positive effect on maximum adsorption capacity. In summery, the sediment adsorption has a promoting effect for the water self-purification in Lanzhou section of the Yellow River.
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出版历程
  • 收稿日期:  2013-09-11
  • 刊出日期:  2014-07-31
武福平, 王颖超, 颜晓飞, 夏传, 肖宇, 霍进彦, 周旋. 黄河兰州段悬移质泥沙对氨氮的吸附特性[J]. 环境工程学报, 2014, 8(8): 3201-3207.
引用本文: 武福平, 王颖超, 颜晓飞, 夏传, 肖宇, 霍进彦, 周旋. 黄河兰州段悬移质泥沙对氨氮的吸附特性[J]. 环境工程学报, 2014, 8(8): 3201-3207.
shu
Wu Fuping, Wang Yingchao, Yan Xiaofei, Xia Chuan, Xiao Yu, Huo Jinyan, Zhou Xuan. Adsorption characteristics of suspended sediment to ammonia nitrogen in Lanzhou section of the Yellow River[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3201-3207.
Citation: Wu Fuping, Wang Yingchao, Yan Xiaofei, Xia Chuan, Xiao Yu, Huo Jinyan, Zhou Xuan. Adsorption characteristics of suspended sediment to ammonia nitrogen in Lanzhou section of the Yellow River[J]. Chinese Journal of Environmental Engineering, 2014, 8(8): 3201-3207.
shu

黄河兰州段悬移质泥沙对氨氮的吸附特性

  • 1. 兰州交通大学环境与市政工程学院, 寒旱地区水资源综合利用教育部工程研究中心, 兰州 730070
  • 收稿日期:  2013-09-11
基金项目:

长江学者和创新团队发展计划资助项目（IRT0966）

国家自然科学基金资助项目（51068014）

摘要: 实验研究了黄河兰州段不同粒径的悬浮泥沙对氨氮的吸附行为，拟阐释黄河兰州段水质自净的机制。通过分析探讨了含沙量、氨氮初始浓度、泥沙粒径和化学成分对氨氮吸附过程的影响。结果表明，准二级动力学方程和Langmuir模型能够较好地描述黄河兰州段不同粒径泥沙的吸附动力学和等温吸附过程（R2>0.9）；含沙量对泥沙吸附氨氮作用具有显著影响，且氨氮吸附量和平衡时间与含沙量呈明显负相关性；氨氮初始浓度与氨氮吸附量及平衡时间呈正相关性；同时，泥沙颗粒越细，吸附氨氮的能力越强，吸附容量越大，反应的自发程度越高。此外，泥沙有机质、Fe2O3、Al2O3和MgO的含量随粒径减小而增大，它们对单位质量泥沙最大吸附量（Sm）具有正效应。泥沙的吸附在黄河兰州段水质自净过程中起着一定的促进作用。

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