Oxygen Transport through Selected Aquatic Macrophytes

DOI Web Site 被引用文献4件
  • K. K. Moorhead
    Univ. of Florida, Inst. of Food and Agric. Sci. Soil Sci. Dep. Gainesville FL 32611
  • K. R. Reddy
    Univ. of Florida, Inst. of Food and Agric. Sci. Soil Sci. Dep. Gainesville FL 32611

抄録

<jats:title>Abstract</jats:title><jats:p>The extent of O<jats:sub>2</jats:sub> transport from aerial plant tissue into the root zone was evaluated for several floating and emergent aquatic macrophytes that have characteristics favorable for wastewater treatment. The highest O<jats:sub>2</jats:sub> transport rates from aerial tissue into the root zone were associated with plants having a small root mass. As root mass increased, the rate of O<jats:sub>2</jats:sub> transport decreased for aquatic macrophytes evaluated. Pennywort (<jats:italic>Hydrocotyle umbellata</jats:italic> L.) had the highest O<jats:sub>2</jats:sub> transport rate of all aquatic macrophytes with an overall rate of 3.49 g O<jats:sub>2</jats:sub> kg<jats:sup>−1</jats:sup> dry root mass h<jats:sup>−1</jats:sup>. Pickerelweed (<jats:italic>Pontederia cordata</jats:italic> L.) had the highest O<jats:sub>2</jats:sub> transport capacity of emergent plants with a rate of 1.54 g O<jats:sub>2</jats:sub> kg<jats:sup>−1</jats:sup> h<jats:sup>−1</jats:sup>. Waterhyacinth [<jats:italic>Eichhornia crassipes</jats:italic> (Mart.) Sollms], an important floating aquatic plant in wastewater treatment, had a transport rate of 1.24 g O<jats:sub>2</jats:sub> kg<jats:sup>−1</jats:sup> h<jats:sup>−1</jats:sup>. Nitrification in a waterhyacinth‐based water treatment system due to O<jats:sub>2</jats:sub> transport was calculated to vary from 6 to 22 kg ha<jats:sup>−1</jats:sup> d<jats:sup>−1</jats:sup>.</jats:p>

収録刊行物

被引用文献 (4)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ