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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/27878

    標題: Kinetics of acetaminophen degradation by Fenton oxidation in a fluidized-bed reactor
    作者: de Luna, Mark Daniel G.
    Briones, Rowena M.
    Su, Chia-Chi
    Lu, Ming-Chun
    貢獻者: 環境資源管理系
    關鍵字: Acetaminophen
    Fluidized-Bed Fenton
    日期: 2013-01
    上傳時間: 2014-05-26 10:47:20 (UTC+8)
    出版者: Pergamon-Elsevier Science Ltd
    摘要: Acetaminophen (ACT), an analgesic and antipyretic substance, is one of the most commonly detected pharmaceutical compound in surface waters and wastewaters. In this study, fluidized-bed Fenton (FB-Fenton) was used to decompose ACT into its final degradation products. The 1.45-L cylindrical glass reactor had inlet, outlet and recirculating sections. SiO2 carrier particles were supported by glass beads with 2-4 mm in diameter. ACT concentration was determined by high performance liquid chromatography (HPLC). During the first 40 min of reaction, a fast initial ACT removal was observed and the "two-stage" ACT degradation conformed to a pseudo reaction kinetics. The effects of ferrous ion dosage and [Fe2+]/ [H2O2] (FH ratio) were integrated into the derived pseudo second-order kinetic model. A reaction pathway was proposed based on the intermediates detected through SPME/GC-MS. The aromatic intermediates identified were hydroquinone, benzaldehydes and benzoic acids while the non-aromatic substances include alcohols, ketones, aldehydes and carboxylic acids. Rapid initial ACT degradation rate can be accomplished by high initial ferrous ion concentration and/or low FH ratio. (C) 2012 Elsevier Ltd. All rights reserved.
    關聯: Chemosphere, v.90 n.4, pp.1444-1448
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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