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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/10457

    標題: 竹炭吸附水中雙酚-A之研究
    Adsorption of Bisphenol-A in Water by Bamboo Charcoal
    作者: 甘鳳琴
    Fang-Chin Kan
    貢獻者: 宋孟浩
    關鍵字: Langmuir模式
    Langmuir model
    BET surface area
    Bamboo charcoal
    日期: 2008
    上傳時間: 2009-03-11 11:42:25 (UTC+8)
    摘要: 本研究之目的乃利用不同溫度600℃、800℃、900℃、1150℃燒製出之竹炭對液相中環境荷爾蒙雙酚-A之研究,探討雙酚-A在不同pH、溫度下之平衡吸附結果。初始平衡吸附條件由動態吸附實驗得知,達吸附平衡所需之時間(te)為24小時。
    The objectives of this study were: 1) to characterize bamboo charcoals prepared at three different temperatures, and 2) to understand their adsorption behavior of Bisphenol-A (BPA) in water. Parameters studied during adsorption include temperatures at which bamboo charcoal was prepared, solution pH, and solution temperature.
    It was found that correlation exists between BET surface area and micro-pore areas. As BET surface area increases, micro-pore area increases as well. Among four different charcoal temperatures, BET surface area is the largest at 600℃ and smallest at 1150℃. Therefore, temperature is an important factor in controlling bamboo charcoal preparation.
    From equilibrium adsorption experiments, it was found that pH value and temperature of Bamboo charcoal can significantly affect BPA adsorption. Model fitting results from Langmuir adsorption isotherm indicate that the adsorption rate constant increases with increasing temperature. Values of the activation energy implied that the mechanism involved physical adsorption. Thermodynamic parameters obtained are as follow: △Go value is negative, △Ho value is positive, and △So value is positive. These values suggest that the adsorption process is spontaneous and endothermic.
    關聯: 校內一年後公開,校外永不公開
    Appears in Collections:[環境工程與科學系(所)] 博碩士論文

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