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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/32627

    標題: Removal of 4-chlorophenol by visible-light photocatalysis using ammonium iron(II) sulfate-doped nano-titania
    作者: Villaluz, Finella Dianna A.
    de Luna, Mark Daniel G.
    Colades, James, I
    Garcia-Segura, Sergi
    Ming-Chun Lu(盧明俊)
    貢獻者: Univ Philippines, Environm Engn Program, Natl Grad Sch Engn
    Univ Philippines, Dept Chem Engn
    Arizona State Univ, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, Sch Sustainable Engn & Built Environm
    Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
    關鍵字: Persistent organic pollutants
    Wastewater treatment
    Visible light photocatalyst
    Advanced oxidation process
    日期: 2019-05
    上傳時間: 2020-07-29 13:52:43 (UTC+8)
    摘要: Halogenated aromatic compounds are toxic and carcinogenic. This is the case of 4-chlorophenol (4CP), a priority pollutant found in large amounts in industrial wastewater effluents from pharmaceutical, dye, pulp and paper industries. Long term exposure to 4-CP even at low-concentration is associated to endocrine disruption. Photocatalysis is a promising advanced oxidation process that attains complete degradation of organic pollutants. The use of UV lamps undermines actual photocatalysis application due to the electrical energy requirements. In this frame, the development of visible light photoactive catalysts can overcome these challenges allowing the implementation using affordable light sources like light emitting diodes (LEDs) or natural sunlight. This work is to present the synthesis and use of an alternative photocatalyst that provided eight-fold increase on 4-CP degradation in comparison to commercial TiO2 Degussa P-25. Almost complete removal (99.20%) was achieved with synthesized Fe/N/S-doped TiO2 at 1.0 g L-1 of photocatalyst dose and pH 7.0 for treating 10 ppm of 4-CP.The first-order rate constant, k(LH ) and Langmuir adsorption constant, Ku(LH, )were calculated with values of 0.429 min(-1) and 2.326 ppm(-1), respectively. The Fe/N/S-TiO2. photocatalysts showed an excellent stability maintaining their performance during four cycles of recovery/reuse. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
    關聯: Process Safety and Environmental Protection, v.125, pp.121-128
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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