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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/2438

    Title: Adsorptive characteristics of cadmium and lead on the goethite-coated sand surface
    Authors: Lai,Chin-Hsing;Chen, Chih-Yu;Wei, Bai-Luh;Lee,Chia-Wei
    Contributors: 輔英科技大學 環境工程與科學系
    Keywords: Adsorption;Coating;Goethite;Heavy metal
    Date: 2001-05
    Issue Date: 2010-09-27 16:07:52 (UTC+8)
    Abstract: This study was conducted to develop a heating process for coating crystalline goethite on the sand surface to utilize the adsorbent properties of the coating. Goethite-coated sand was investigated for adsorbing cadmium and lead ions from water by batch and column experiments. Chemical analysis (energy dispersive analysis of X-ray, EDAX) was used for characterizing the cadmium and lead adsorption sites on goethite-coated sand. From the results of the batch experiments, the cadmium and lead ions could be adsorbed effectively on the goethite-coated sand. Maximum adsorption capacity values for cadmium and lead were 319, 704 μg-Cd/g-sand and 702, 1241 μg-Pb/g-sand at pH = 5.0, pH = 6.0, respectively. The interaction between cadmium, lead ions and goethite on sand surface was primarily to cause the chemical bonding. Results from column experiments indicated that the cadmium and lead ions could be removed higher than 95% before 110, 130 and 66, 85 numbers of pore volume of influent were treated at pH = 5.0 and pH = 6.0, respectively.
    Relation: Journal of Environmental Science and Health, Part A, Volume 36, Issue 5 , pages 747 - 763
    Appears in Collections:[環境工程與科學系] 期刊論文

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