土壌フィルターによるNO吸着実験

DOI 機関リポジトリ 日本農学文献記事索引 Web Site Web Site 被引用文献1件 参考文献22件
  • 関 平和
    金沢大学大学院自然科学研究科社会基盤工学専攻
  • 奥村 綱雄
    金沢大学大学院自然科学研究科社会基盤工学専攻

書誌事項

タイトル別名
  • An Experiment of NO (nitrogen monoxide) Adsorption by a Soil Filter
  • ドジョウ フィルター ニ ヨル NO キュウチャク ジッケン

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抄録

In this paper, NO (nitrogen monooxide) adsorption ability of a soil filter was considered both experimentally and theoretically as the first step in developing a new nitrogen recovery system using the soil filter and plants. In this proposed system, a gas component NO that is discharged from fixed sources such as incineration plants will be trapped by a soil filter and transformed into NO3-, and then absorbed by the plants. At first, by comparing the O2 breakthrough curve obtained experimentally with that calculated from the analytical solution of O2 concentration, the apparent gas diffusivity in the soil filter was obtained. Next, assuming that the rate of adsorption follows a linear driving force (LDF) model, two parameters a (equilibrium constant) and Θ (time constant) of the LDF model were evaluated for each experiment, and a solution of NO concentration was numerically derived. The validity of the solution was proved by comparing the NO breakthrough curve obtained experimentally with that calculated numerically. The value of Θ greatly differs according to soil texture, and the value of a is large under moderate moisture content conditions. Since the adsorption ability of the soil filter is small, however, it seems insufficient to use the soil alone as a filter to trap NO from fixed sources.

収録刊行物

  • 農業気象

    農業気象 63 (4), 193-200, 2007

    日本農業気象学会

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