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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/23483


    標題: Cadmium Transport in Soil: Model and Experiments
    作者: S. Vigneswaran
    K. Sriananthakumar
    Jing Song Chang
    貢獻者: 環境工程衛生科
    關鍵字: Transport
    Breakthrough
    Adsorption
    Mobility
    Equilibrium
    日期: 1991
    上傳時間: 2011-01-04 16:45:08 (UTC+8)
    摘要: The main mechanisms involved in Cd transport in satruated subsurface soil was studied by modelling it as a fixed bed adsorption system. Experiments conducted with ditterent particle sizes of sand (and at pH 6.0) indicated that isotherm parameters depend on sand particle size. Freundlich isotherm gave better correlation for adsorption of Cd in sand medium than Langmuir isotherm. The applicability of relative solute velocity transport model derived from general solute transport equation, incorporating Freundlich isotherm (with local equilibrium assumption) was investigated. The relative solute velocity predicted from batch experimental data was higher than that of soil column breakthrough data, thus isotherm parameters estimated from the column breakthrough were used in model simulation. The relative Cd velocities (to Darcy's velocity)were found to be in the range of 0.0008 to 0.001., indicating limited mobility under the conditions tested.
    關聯: 嘉南學報 17期 : p.A60-A68 轉載 International Conf. On Computer Application in Water Resources, 2 p. 969-977
    Appears in Collections:[嘉南學報] 17期 (1991)
    [環境工程與科學系(所)] 期刊論文

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