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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/25349


    標題: Removal of 2,4-Dichlorophenol By Fluidized-Bed Fenton Process
    作者: Isara Muangthai
    Chavalit Ratanatamsakul
    Ming-Chun Lu
    貢獻者: 環境資源管理系
    關鍵字: Advance oxidation processes
    box-Behnken design
    fluidized-bed Fenton process
    2,4- dichlorophenol
    日期: 2010-09
    上傳時間: 2012-05-31 14:49:46 (UTC+8)
    摘要: The degradation of 2,4-dichlorophenol (2,4-DCP) by fluidized-bed Fenton process has been optimized by using experimental design methodology. Box-Behnken design was applied to investigate the effects of pH, the amount of carriers, initial H2O2 and initial Fe2+ concentration on the treatment performance in terms of 2,4-DCP, chemical oxygen demand (COD) and total iron removal efficiencies. Results showed that H2O2 concentration had more profound effect than Fe2+ in terms of 2,4-DCP removal while, pH and the amount of carriers did not have an obvious effect on 2,4-DCP degradation. Increasing H2O2 concentrations could improve COD removal whereas increasing Fe2+ concentration more than 0.55 mM would decrease COD removal. The decreased COD performance was probably due to hydroxyl radical scavenging effects. Results also revealed the optimum condition for degrade 2,4-DCP, from the Box-Behnken design prediction: pH 3, 100 g of SiO2, 0.25 mM of Fe2+ and 10 mM of H2O2. Under this conditions, 2,4-DCP, COD and total iron removal efficiencies were > 99, 55 and 14%, respectively. Additionally, the total iron removal efficiency at the optimum condition in fluidized-bed Fenton was higher than that in Fenton process. This result demonstrates the advantage of fluidized-bed Fenton process compared with the traditional Fenton technology.
    關聯: Sustainable Environment Research 20(5):p.325-331
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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