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https://ir.cnu.edu.tw/handle/310902800/27878
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| Title: | Kinetics of acetaminophen degradation by Fenton oxidation in a fluidized-bed reactor |
| Authors: | de Luna, Mark Daniel G.
Briones, Rowena M.
Su, Chia-Chi
Lu, Ming-Chun |
| Contributors: | 環境資源管理系 |
| Keywords: | Acetaminophen
Fluidized-Bed Fenton
Kinetics
Intermediates |
| Date: | 2013-01 |
| Issue Date: | 2014-05-26 10:47:20 (UTC+8) |
| Publisher: | Pergamon-Elsevier Science Ltd |
| Abstract: | 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. |
| Relation: | Chemosphere, v.90 n.4, pp.1444-1448 |
| Appears in Collections: | [Dept. of Environmental Resources Management] Periodical Articles
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